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FIX: Stop error on a server that is running Forefront Threat Management Gateway 2010: "IRQL_NOT_LESS_OR_EQUAL (a)"


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Symptoms

A server that is running Microsoft Forefront Threat Management Gateway (TMG) 2010 may crash with the following Stop error:
IRQL_NOT_LESS_OR_EQUAL (a)
An attempt was made to access a pageable (or completely invalid) address at an
interrupt request level (IRQL) that is too high. This is usually
caused by drivers using improper addresses.
If a kernel debugger is available get the stack backtrace.
Arguments:
Arg1: fffff98000000080, memory referenced
Arg2: 0000000000000002, IRQL
Arg3: 0000000000000000, bitfield :
bit 0 : value 0 = read operation, 1 = write operation
bit 3 : value 0 = not an execute operation, 1 = execute operation (only on chips which support this level of status)
Arg4: fffff80001ba38e8, address which referenced memory

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Resolution

To resolve this problem, install the service pack that is described in the following Microsoft Knowledge Base article:
2555840 Description of Service Pack 2 for Microsoft Forefront Threat Management Gateway 2010

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Status

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

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References

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

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Keywords: kbfix, kbbug, kbexpertiseinter, kbsurveynew, kb

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Article Info
Article ID : 2591837
Revision : 1
Created on : 1/7/2017
Published on : 10/31/2011
Exists online : False
Views : 306