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  1. As you already know Exchange Server 2016 will be entering Extended Supporton October 14th 2020.. During that period it will receive only Critical and will be no further release of CUs, with the last planned CU to be released in December 2020. One of the many concerns regarding that transition is that at the moment there is no free Exchange Server 2019 license for just managing the exchange attributes on hybrid deployments as there is for Exchange 2016. According to the Product Group that specific license for the Exchange Server 2019 will be release after 14th October. Also as a heads-up the product group is working on a solution that will remove the need of those on-premise “management attributes| only servers. Microsoft encourages Exchange Server 2016 customers to adopt CU19 as soon as possible to ensure uninterrupted delivery of any future security related fixes. After December 15, 2020, only CU19 or its successors will receive critical updates. During the Extended Support phase, only the latest CU is eligible to receive critical updates once the standard 3 month transition period of the prior CU has lapsed. Critical updates will continue to be made available via Windows Update and the Microsoft Download Center. Additional lifecycle information for all Microsoft products is available on docs.microsoft.com. These are great news since is the first time that a working plan for the retirement of those on-premise server serving only for management is announced.
  2. As you already know Exchange Server 2016 will be entering Extended Supporton October 14th 2020.. During that period it will receive only Critical and will be no further release of CUs, with the last planned CU to be released in December 2020. One of the many concerns regarding that transition is that at the moment there is no free Exchange Server 2019 license for just managing the exchange attributes on hybrid deployments as there is for Exchange 2016. According to the Product Group that specific license for the Exchange Server 2019 will be release after 14th October. Also as a heads-up the product group is working on a solution that will remove the need of those on-premise “management attributes| only servers. Microsoft encourages Exchange Server 2016 customers to adopt CU19 as soon as possible to ensure uninterrupted delivery of any future security related fixes. After December 15, 2020, only CU19 or its successors will receive critical updates. During the Extended Support phase, only the latest CU is eligible to receive critical updates once the standard 3 month transition period of the prior CU has lapsed. Critical updates will continue to be made available via Windows Update and the Microsoft Download Center. Additional lifecycle information for all Microsoft products is available on docs.microsoft.com. These are great news since is the first time that a working plan for the retirement of those on-premise server serving only for management is announced.
  3. As you already know Exchange Server 2016 will be entering Extended Supporton October 14th 2020.. During that period it will receive only Critical and will be no further release of CUs, with the last planned CU to be released in December 2020. One of the many concerns regarding that transition is that at the moment there is no free Exchange Server 2019 license for just managing the exchange attributes on hybrid deployments as there is for Exchange 2016. According to the Product Group that specific license for the Exchange Server 2019 will be release after 14th October. Also as a heads-up the product group is working on a solution that will remove the need of those on-premise “management attributes| only servers. Microsoft encourages Exchange Server 2016 customers to adopt CU19 as soon as possible to ensure uninterrupted delivery of any future security related fixes. After December 15, 2020, only CU19 or its successors will receive critical updates. During the Extended Support phase, only the latest CU is eligible to receive critical updates once the standard 3 month transition period of the prior CU has lapsed. Critical updates will continue to be made available via Windows Update and the Microsoft Download Center. Additional lifecycle information for all Microsoft products is available on docs.microsoft.com. These are great news since is the first time that a working plan for the retirement of those on-premise server serving only for management is announced.
  4. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Cumulative Update 6 for Microsoft Exchange Server 2019 was released on June 16, 2020. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2019. This update also includes new daylight saving time (DST) updates for Exchange Server 2019. For more information about DST, see Daylight Saving Time Help and Support Center. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. NotesIf you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 6 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2019 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2019 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2019 4559440 Export to a PST for an eDiscovery search fails Exchange Server 2019 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2019 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2019 4559438 Edge Transport server hangs in Exchange Server 2019 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2019 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2019 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2019 4559436 Attachments with properties (like Azure Information Protection labels) not always matching in Exchange Server 2019 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2019
  5. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Cumulative Update 6 for Microsoft Exchange Server 2019 was released on June 16, 2020. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2019. This update also includes new daylight saving time (DST) updates for Exchange Server 2019. For more information about DST, see Daylight Saving Time Help and Support Center. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 6 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2019 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2019 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2019 4559440 Export to a PST for an eDiscovery search fails Exchange Server 2019 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2019 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2019 4559438 Edge Transport server hangs in Exchange Server 2019 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2019 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2019 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2019 4559436 Attachments with properties (like Azure Information Protection labels) not always matching in Exchange Server 2019 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2019
  6. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Cumulative Update 6 for Microsoft Exchange Server 2019 was released on June 16, 2020. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2019. This update also includes new daylight saving time (DST) updates for Exchange Server 2019. For more information about DST, see Daylight Saving Time Help and Support Center. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 6 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2019 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2019 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2019 4559440 Export to a PST for an eDiscovery search fails Exchange Server 2019 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2019 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2019 4559438 Edge Transport server hangs in Exchange Server 2019 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2019 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2019 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2019 4559436 Attachments with properties (like Azure Information Protection labels) not always matching in Exchange Server 2019 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2019
  7. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 17 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages.To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2016 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2016 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 and 2016 4559436 Attachments with properties (like Azure Information Protection labels) don’t always match in Exchange Server 2016 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2016 4559438 Edge Transport server hangs in Exchange Server 2016 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2016 4559440 Export to a PST for an eDiscovery search fails in Exchange Server 2016 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2016 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2016 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2016 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2016 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2016
  8. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 17 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2016 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2016 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 and 2016 4559436 Attachments with properties (like Azure Information Protection labels) don’t always match in Exchange Server 2016 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2016 4559438 Edge Transport server hangs in Exchange Server 2016 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2016 4559440 Export to a PST for an eDiscovery search fails in Exchange Server 2016 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2016 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2016 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2016 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2016 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2016
  9. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 17 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages.To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4559444 Conversion from HTML to RTF removes non-breaking space in Exchange Server 2016 4559435 Introduce an OrganizationConfig flag to enable or disable recipient read session in Exchange Server 2016 4547707 Enable piping for Restore-RecoverableItems in Exchange Server 2019 and 2016 4559436 Attachments with properties (like Azure Information Protection labels) don’t always match in Exchange Server 2016 4559437 PR_RECIPIENT_ENTRYID is computed if no email address or type in Exchange Server 2016 4559438 Edge Transport server hangs in Exchange Server 2016 4559439 EAS creates failure report if a message with unknown recipients is in Drafts in Exchange Server 2016 4559440 Export to a PST for an eDiscovery search fails in Exchange Server 2016 4559441 Foreign language characters set in RejectMessageReasonText of a transport rule aren’t shown correctly in Exchange Server 2016 4559442 2080 Events caused by empty values in HKLM\SYSTEM\CurrentControlSet\Services\MSExchange ADAccess\Instance0 in Exchange Server 2016 4549689 HMA EvoSTS certificate rollover causes authentication prompts due to stalled key on worker process spawn (warmup phase) in Exchange Server 2016 4559443 Managed Folder Assistant fails with Event ID 9004 NotInBagPropertyErrorException in Exchange Server 2016 4559446 Changes to Outlook on the web blocked file extensions and MIME types in Exchange Server 2016
  10. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Κnown issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 5 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4552472 Exchange Server 2019 Sizing Calculator version 10.4 is available 4536552 Export-ModernPublicFolderStatistics.ps1 is not working in Exchange Server 2019 4538303 Exchange 2019 Setup Prerequisite Check fails for .NET 4.8 Framework in CU4 on Windows builds 1909 and 1903 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2019 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2019 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2019 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2019 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2019 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2019 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2019 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2019 4547714 Can’t add remote shared mailbox using ECP into distribution group in Exchange Server 2019 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2019 4547719 MCDB status is “Offline” and SSDs are not formatted in Exchange Server 2019 4547720 Partial word searches not working for mailboxes in Outlook online mode in Exchange Server 2019 4547721 Exchange Sizing Calculator still supports mail.que database over 2 TB in Exchange Server 2019 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2019 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2019 4536987 Description of the security update for Microsoft Exchange Server 2019: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2019: March 10, 2020
  11. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Κnown issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 5 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4552472 Exchange Server 2019 Sizing Calculator version 10.4 is available 4536552 Export-ModernPublicFolderStatistics.ps1 is not working in Exchange Server 2019 4538303 Exchange 2019 Setup Prerequisite Check fails for .NET 4.8 Framework in CU4 on Windows builds 1909 and 1903 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2019 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2019 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2019 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2019 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2019 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2019 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2019 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2019 4547714 Can’t add remote shared mailbox using ECP into distribution group in Exchange Server 2019 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2019 4547719 MCDB status is “Offline” and SSDs are not formatted in Exchange Server 2019 4547720 Partial word searches not working for mailboxes in Outlook online mode in Exchange Server 2019 4547721 Exchange Sizing Calculator still supports mail.que database over 2 TB in Exchange Server 2019 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2019 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2019 4536987 Description of the security update for Microsoft Exchange Server 2019: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2019: March 10, 2020
  12. This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Κnown issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. NotesIf you are upgrading from Cumulative Update 2 for Exchange Server 2019 or a later cumulative update for Exchange Server 2019 to Cumulative Update 5 for Exchange Server 2019, there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 2 for Exchange Server 2019), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD commandis run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then, the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 3 for Exchange Server 2019. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles: 4552472 Exchange Server 2019 Sizing Calculator version 10.4 is available 4536552 Export-ModernPublicFolderStatistics.ps1 is not working in Exchange Server 2019 4538303 Exchange 2019 Setup Prerequisite Check fails for .NET 4.8 Framework in CU4 on Windows builds 1909 and 1903 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2019 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2019 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2019 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2019 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2019 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2019 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2019 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2019 4547714 Can’t add remote shared mailbox using ECP into distribution group in Exchange Server 2019 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2019 4547719 MCDB status is “Offline” and SSDs are not formatted in Exchange Server 2019 4547720 Partial word searches not working for mailboxes in Outlook online mode in Exchange Server 2019 4547721 Exchange Sizing Calculator still supports mail.que database over 2 TB in Exchange Server 2019 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2019 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2019 4536987 Description of the security update for Microsoft Exchange Server 2019: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2019: March 10, 2020
  13. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 16 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages. To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2016 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2016 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2016 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2016 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2016 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2016 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2016 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2016 4547714 Can’t add remote shared mailbox by using ECP into distribution group in Exchange Server 2016 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2016 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2016 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2016 4547716 Event ID 1325 and Test-ExchangeSearch crashes application pool with NullReferenceException in Exchange Server 2016 4536987 Description of the security update for Microsoft Exchange Server 2016: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2016: March 10, 2020
  14. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 16 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages.To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2016 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2016 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2016 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2016 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2016 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2016 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2016 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2016 4547714 Can’t add remote shared mailbox by using ECP into distribution group in Exchange Server 2016 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2016 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2016 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2016 4547716 Event ID 1325 and Test-ExchangeSearch crashes application pool with NullReferenceException in Exchange Server 2016 4536987 Description of the security update for Microsoft Exchange Server 2016: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2016: March 10, 2020
  15. This cumulative update includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues Known issues in this cumulative update In multidomain Active Directory forests in which Exchange is installed or has been prepared previously by using the /PrepareDomain option in Setup, this action must be completed after the /PrepareAD command for this cumulative update has been completed and the changes are replicated to all domains. Setup will try to run the /PrepareAD command during the first server installation. Installation will finish only if the user who initiated Setup has the appropriate permissions. Notes If you are upgrading from Cumulative Update 13 for Exchange Server 2016 or a later cumulative update for Exchange Server 2016 to Cumulative Update 16 for Exchange Server 2016, then there’s no need to run the /PrepareAD or /PrepareDomain. No additional actions (prepareAD, prepareDomain, or assigning permissions) are required. If you have ever skipped a Cumulative Update (for example, you are upgrading from an earlier version before Cumulative Update 13 for Exchange Server 2016), or this is a first Exchange Server installation in the AD, then this Known Issue section should be taken care of. About the /PrepareDomain operation in multidomain: The /PrepareDomain operation automatically runs in the Active Directory domain in which the /PrepareAD command is run. However, it may be unable to update other domains in the forest. Therefore, a domain administrator should run the /PrepareDomain in other domains in the forest. About the permission question: As the /PrepareAD is triggered in Setup, if the user who initiates Setup isn’t a member of Schema Admins and Enterprise Admins, the readiness check will fail and you receive the following error messages.To avoid the errors, either the user should join Schema Admins and Enterprise Admins groups or another user in Schema Admins and Enterprise Admins groups manually runs the /PrepareAD for this Cumulative Update first. Then the Exchange admin user can start Setup. Autodiscover Event ID 1 occurs after you install Cumulative Update 14 for Exchange Server 2016. For more information, see KB 4532190. Issues that this cumulative update fixes This cumulative update fixes the issues that are described in the following Microsoft Knowledge Base articles: 4547705 Authentication loop between msft.sts.microsoft.com/adfs and OWA in Exchange Server 2016 4547706 Birthday isn’t correctly synced to iOS native mail app in Exchange Server 2016 4547708 Elevation of privileges possible when Active Directory permissions role is granted in Exchange Server 2016 4547709 InternetWebProxyBypassList is ignored by Mailbox Replication service in Exchange Server 2016 4547710 New-MailboxSearch with In-Place Hold enabled replaces all values in msExchUserHoldPolicies if adding a value in Exchange Server 2016 4547711 Public folder permissions aren’t applied from Outlook in Exchange Server 2016 hybrid environment 4547712 Outlook on the web (OWA) exposes junk operations even if disabled via OwaMailboxPolicy in Exchange Server 2016 4547713 IsOnlineMeeting is always false for Teams-only meetings in Exchange Server 2016 4547714 Can’t add remote shared mailbox by using ECP into distribution group in Exchange Server 2016 hybrid environment 4547715 New created search folder retention policy is changed in Exchange Server 2016 4547722 Can’t go from Office 365 to Enterprise in Exchange Server 2016 Exchange admin center (EAC) if Chrome SameSite Cookie is enabled 4547723 Can’t sign in to Office 365 if configuring hybrid with Chrome SameSite Cookie enabled in Exchange Server 2016 4547716 Event ID 1325 and Test-ExchangeSearch crashes application pool with NullReferenceException in Exchange Server 2016 4536987 Description of the security update for Microsoft Exchange Server 2016: February 11, 2020 4540123 Description of the security update for Microsoft Exchange Server 2016: March 10, 2020
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