Exchange 2016 CU16 released

Microsoft has released Cumulative Update 16 for Microsoft Exchange Server 2016 on March 17, 2020. This cumulative update 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 2016.  

This update also includes new daylight saving time (DST) updates for Exchange Server 2016

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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