System.ObjectDisposedException may occur when you run a .NET Framework 2.0-based application on a server that has the Chinese (Simplified) or Chinese (Traditional) language pack installed


When you run a Microsoft .NET Framework 2.0- based application on an operating system that has the Chinese (Simplified) or Chinese (Traditional) language pack installed, you may experience a System.ObjectDisposedException exception. Additionally, you may receive the following error message:
Cannot access a closed resource set.
When this issue occurs, the stack trace resembles the following:


Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only 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 software update that contains this hotfix.

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


To apply this hotfix, you must have the .NET Framework 2.0 Service Pack 2 (SP2) installed.

Restart requirement

You must restart the computer if any .NET Framework applications are running when you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfix.

File information

The English version of this hotfix 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 item in Control Panel.
For all supported x86-based versions of Windows XP and of Windows Server 2003
File nameFile versionFile sizeDateTimePlatform
Mscordacwks.dll2.0.50727.5066989,52815-Dec- 201005:50x86
Mscorwks.dll2.0.50727.50665,924,17615-Dec- 201005:50x86
For all supported x64-based versions of Windows XP and of Windows Server 2003
File nameFile versionFile sizeDateTimePlatform
Mscordacwks.dll2.0.50727.50661,755,48014-Dec- 201023:18x64
Mscorwks.dll2.0.50727.50669,992,52814-Dec- 201023:16x64
For all supported IA-64-based versions of Windows Server 2003
File nameFile versionFile sizeDateTimePlatform
Mscorwks.dll2.0.50727.506620,341,58415-Dec- 201001:24IA-64


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