Applies ToExchange Server 2019

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 who have 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 15 Hotfix Update 2 for Exchange Server 2019

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

Exchange2019-KB5057651-x64-en.exe

F580AF76041A284CB4BD4B0470AD074FBFBD5F6AEF67CA746A2838FD6C27D8F9

Hashes for additional languages

The hash tables for additional languages are available here:

Information about protection and security

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Learn how we guard against cyber threats: Microsoft Security

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