This cumulative update is a security update. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues.

Issues that this cumulative update fixes

• 4502134 Can’t get all the emails when searching mailbox by using an end date that’s different from today in Exchange Server 2019
• 4502135 Correct the error message that you receive when installing Exchange Server 2019 in an organization that has Exchange Server 2010 installed
• 4502154 Providing information to administrators when auto forward limit is reached in Exchange Server 2019 and 2016
• 4502155 “The primary SMTP address must be specified when referencing a mailbox” error when you use impersonation in Exchange Server 2019 and 2016
• 4502156 Audit logs aren’t updated when “-WhatIf” is used as $false in the command in Exchange Server 2019 and 2016
• 4502157 The Find command not returning the HasAttachments element in Exchange Server 2019 and 2016
• 4502158 SyncFolderItems contains duplicated ReadFlagChange items in Exchange Server 2019 and 2016
• 4502131 “TLS negotiation failed with error UnknownCredentials” error after you update TLSCertificateName on Office 365 send connector in Exchange Server 2019 hybrid environment
• 4502132 Can’t reply to old emails after migration even though old legacyExchangeDN is set to migrated mailbox in Exchange Server 2019 and 2016
• 4502136 The response of FETCH (BODYSTRUCTURE) command of IMAP violates RFC 3501 in Exchange Server 2019 and 2016
• 4502140 Can’t preview an eDiscovery search when there are multiple domains in Exchange Server 2019 and 2016
• 4502141 Appointment that’s created by responding to an email message doesn’t show in any Outlook calendar views in Exchange Server 2019 and Exchange Server 2016
• 4502133 Can’t use Outlook on the web to reply a partner email through mutual TLS in Exchange Server 2019 and 2016
• 4488396 Can’t search any results in manually added shared mailbox in Outlook in Exchange Server 2019 and 2016
• 4488078 Public folder contact lists don’t show contact’s profile picture in Outlook on the web in Exchange Server 2019 and 2016
• 4499503 Heavy organizational forms traffic because of materialized restriction when organization forms library has more than 500 items in Exchange Server 2019 and 2016
• 4503027 Description of the security update for Microsoft Exchange Server 2019 and 2016: June 11, 2019