Article ID: 2863473 - View products that this article applies to.
Consider the following scenario:
This issue occurs because the limit for the number of pending threads in the RPCClientAccess.exe process is not low enough. Therefore, it takes a long time to call back threads from the Mailbox server that freezes.
To resolve this issue, install the following update rollup:
(http://support.microsoft.com/kb/2866475/ )Description of Update Rollup 2 for Exchange Server 2010 SP3
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about the RPC Client Access service, go to the following Microsoft website:
General information about the RPC Client Access serviceFor more information about hardware load balancers for Exchange Server 2010, go to the following Microsoft website:
General information about hardware load balancers
Article ID: 2863473 - Last Review: October 10, 2013 - Revision: 2.0
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