FIX: The GC heap becomes corrupted when you use the .NET Framework System.Security.Cryptography.RSACryptoServiceProvider class

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When you use the Microsoft .NET Framework System.Security.Cryptography.RSACryptoServiceProvider class in an application, the GC heap may become corrupted, and the application may quit unexpectedly (crash).
The GC heap becomes corrupted if you call the System.Security.Cryptography.RSACryptoServiceProvider constructor during garbage collection. This call to the constructor involves additional private method calls that are not coded correctly to interact with the garbage collector. This behavior may cause memory corruption.

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 Microsoft .NET Framework 1.1 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: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.


You must have the .NET Framework 1.1 installed to apply this software update.

Restart requirement

You do not have to 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) 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   ---------------------------------------------------------------   17-Apr-2004  01:32  1.1.4322.1031     77,824  Corperfmonext.dll   17-Apr-2004  01:29  1.1.4322.1031    282,624  Fusion.dll   17-Apr-2004  01:29  1.1.4322.1031    311,296  Mscorjit.dll   17-Apr-2004  01:32  1.1.4322.1031    102,400  Mscorld.dll   19-Apr-2004  05:23  1.1.4322.1031  2,093,056  Mscorlib.dll   17-Apr-2004  01:22                    10,756  Mscorlib.ldo   17-Apr-2004  01:30  1.1.4322.1031  2,502,656  Mscorsvr.dll   17-Apr-2004  01:31  1.1.4322.1031  2,490,368  Mscorwks.dll
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information about the terminology that is used to describe Microsoft product updates, 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

Article ID: 839289 - Last Review: 01/17/2015 07:59:48 - Revision: 2.1

Microsoft .NET Framework 1.1

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