Cumulative Update 22 for Exchange Server 2016 (KB5005333)

Cumulative Update 22 for Microsoft Exchange Server 2016 was released on September 28, 2021. 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 2016. This update also includes new daylight saving time (DST) updates for Exchange Server 2016.

https://support.microsoft.com/en-us/topic/cumulative-update-22-for-exchange-server-2016-kb5005333-ceb154d8-7116-43a5-83c1-205af7c43764