Event ID 5000 occurs when the Exchange IMAP4 worker process crashes intermittently in Exchange Server 2007

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SYMPTOMS

The Exchange IMAP4 worker process crashes intermittently on a computer that is running Microsoft Exchange Server 2007. When this problem occurs, an event is logged that resembles the following:

Event Type: Error
Event Source: .NET Runtime 2.0 Error Reporting
Event Category: None
Event ID: 5000
Description: EventType clr20r3, P1 microsoft.exchange.imap4.exe, P2 8.1.278.2, P3 481f7feb, P4 microsoft.exchange.imap4, P5 8.0.0.0, P6 481f7feb, P7 a6, P8 17, P9 system.nullreferenceexception, P10 NIL.

For more information, see Help and Support Center at
http://go.microsoft.com/fwlink/events.asp.

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RESOLUTION

To resolve this problem, install Update Rollup 4 for Exchange Server 2007 Service Pack 1 (SP1) on the Exchange server. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

952580 (http://support.microsoft.com/kb/952580/ ) Description of Update Rollup 4 for Exchange Server 2007 Service Pack 1

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