The Microsoft Exchange Service Host service (Microsoft.Exchange.ServiceHost.exe) on a Microsoft Exchange Server 2010 server crashes intermittently. Additionally, the following event is logged in the Application log:


This issue occurs because the EventLog.WriteEvent method throws an ArgumentException exception when an event text is larger than 32,766 characters.


To resolve this issue, install the following update rollup:

2529939 Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the EventLog.WriteEvent method, visit the following Microsoft website:

General information about the EventLog.WriteEvent method

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