Notice
This update is no longer available. To fix the issues that are described in this article, install the latest Microsoft Exchange Server update from the following Microsoft Learn article:
Exchange Server build numbers and release dates
Microsoft provides download files only for N-2 versions for an Exchange Server cumulative update (CU), where "N" is the latest CU. The latest CU can be used to recover servers that are running Exchange Server. This includes servers that have a previous CU installed.
Summary
Cumulative Update 1 for Microsoft Exchange Server 2016 was released on March 15, 2016. Several nonsecurity issues are fixed in this cumulative update or a later cumulative update for Exchange Server 2016.
Issues that the cumulative update fixes
This cumulative update fixes an issue in which Test-ExchangeSearch or Test-ExchangeSearch -MailboxDatabase doesn't work.This cumulative update also fixes the issues that are described in the following Microsoft Knowledge Base articles:
Known issues
After you install this update on a computer where the CPU is older than the Nehalem (Intel, 2008) or Barcelona (AMD, 2007) microarchitectures, Exchange Server 2016 search processes will crash. However, this issue will be resolved in Cumulative Update 2 for Exchange Server 2016.Note: To validate if your computer is affected, run the coreinfo.exe /ACCEPTEULA /F | findstr POPCNT command by using the Coreinfo utility to test.
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For a CPU that is incompatible with Cumulative Update 1, you will receive the following POPCNT output:Coreinfo v3.31 - Dump information on system CPU and memory topologyCopyright (C) 2008-2014 Mark RussinovichSysinternals - www.sysinternals.comPOPCNT - Supports POPCNT instruction
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For a CPU that is compatible with Cumulative Update 1, the POPCNT output will be displayed as:Coreinfo v3.31 - Dump information on system CPU and memory topologyCopyright (C) 2008-2014 Mark RussinovichSysinternals - www.sysinternals.comPOPCNT * Supports POPCNT instruction
More Information
For more information about the deployment of Exchange Server 2016, see Release Notes for Exchange 2016.For more information about the coexistence of Exchange Server 2016 and earlier versions of Exchange Server in the same environment, see Exchange 2016 System Requirements.For more information about other Exchange updates, see Exchange Server Updates: Build numbers and release dates.
References
See the terminology that Microsoft uses to describe software updates.
