Applies ToExchange Server 2016

Note: This update also includes all the updates that were included in the November 2024 security updates for Exchange Server

Issues that this hotfix update fixes

Note: We are retiring a feature in Exchange Online that previously enabled users with a primary mailbox hosted on Exchange Server (on-premises) to access their archive mailbox, hosted in Exchange Online, through Outlook on the Web (OWA). For more information see, Changes in OWA interface because of cloud archive mailbox retirement.​​​​​​​

Get Cumulative Update 23 Hotfix Update 16 for Exchange Server 2016

Method 1: Windows Update

This update is available through Windows Update as an Optional update. For more information see Windows Update: FAQ.

Method 2: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center.  

File information

File hash information

File name

SHA256 hash

Exchange20165-KB5057653-x64-en.exe

6A239B111F6B2250CE6B57E986922AA6A54AAB7E1AE2E2E08F2547C1AD2FF21B

Hashes for additional languages

The hash tables for additional languages are available here:

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