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Exchange 2016 RPC Client Access service experiences high CPU usage or a memory leak

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Symptoms

On servers that are running Microsoft Exchange Server 2016 and that have Cumulative Update 4 or Cumulative Update 5 installed, you experience the following situations:

  • The Microsoft Exchange RPC Client Access service process (Microsoft.Exchange.RpcClientAccess.Server.exe) consumes excessive CPU resources on Exchange Server 2016-based servers. 
  • A memory leak occurs in the Microsoft Exchange RPC Client Access service on Exchange Server 2016-based servers.
  • The Exchange application pools (EWS, RPC, MAPI, ActiveSync) on Exchange Server 2016-based servers experience high CPU usage and a memory leak.

Note If you have installed third-party email archiving software on Exchange Server 2016-based servers, this issue might be worsened.

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Workaround

To work around this issue, restart the service or application pool to temporarily fix the issue.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

 

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Keywords: kb, kbfix, kbbug, kbexpertisebeginner, kbsurveynew

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Article Info
Article ID : 4023758
Revision : 31
Created on : 7/30/2020
Published on : 7/30/2020
Exists online : False
Views : 289