Microsoft KB Archive/875510

= FIX: An access violation occurs when an AppDomain.Unload method is unloading in the .NET Framework 1.0 =

Article ID: 875510

Article Last Modified on 6/1/2006

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APPLIES TO


 * Microsoft .NET Framework 1.0 Service Pack 3
 * Microsoft .NET Framework 1.0 Service Pack 2
 * Microsoft .NET Framework 1.0 Service Pack 1
 * Microsoft .NET Framework 1.0

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SYMPTOMS
In the Microsoft .NET Framework 1.0, when an AppDomain.Unload method is unloading, an access violation occurs. The access violation is followed by an ExecutionEngineException exception.



CAUSE
This problem occurs when a race condition exists between a security demands thread and the thread that is unloading the AppDomain.Unload method.



Software update information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 1.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
This hotfix requires .NET Framework 1.0 Service Pack 3.

Restart requirement
You must restart your computer after you apply this software update.

Software update replacement information
This software update does not replace any other software updates.

File information
The English version of this software update has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.  Date         Time   Version        Size       File name -- 12-Oct-2004  22:13  1.0.3705.6026  1,998,848  Mscorlib.dll 12-Oct-2004 08:05  1.0.3705.6026  2,265,088  Mscorsvr.dll 12-Oct-2004 08:04  1.0.3705.6026  2,269,184  Mscorwks.dll



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For additional information, 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

Additional query words: CLR crash

Keywords: kbbug kbfix kbqfe kbhotfixserver KB875510

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