Hotfix Rollup 2829537 is available for the .NET Framework 3.5 SP1 on Windows 7 SP1, Windows Server 2008 R2 SP1

Hotfix Information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, 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:

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

To apply this hotfix, you must have the .NET Framework 3.5 SP1 installed.

Restart requirement

You have to restart the computer after you apply this hotfix if any affected files are being used. We recommend that you close all .NET Framework-based applications before you apply this hotfix.

Hotfix replacement information

This hotfix package does not replace a previously released hotfix package.

Issues that this hotfix rollup resolves

When you call some methods of the System.Diagnostics.Eventing.Reader.EventRecord class, such as FormatDescription method, in an application, the methods may return a NULL value. 

Note This issue may occur only when an exact locale or region is not installed on your computer.