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Hotfix rollup 2756203 is available for the .NET Framework 4.5 in Windows Vista SP2, Windows Server 2008 SP2, Windows 7, Windows 7 SP1, Windows Server 2008 R2, and Windows Server 2008 R2 SP1

This article describes hotfix rollup 2756203 for the Microsoft .NET Framework 4.5 on Windows Vista Service Pack 2 (SP2), Windows Server 2008 SP2, Windows 7, Windows 7 Service Pack 1 (SP1), Windows Server 2008 R2, and Windows Server 2008 R2 SP1. This hotfix rollup fixes stability, reliability, and performance issues in the .NET Framework 4.5.

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: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 4.5 installed in Windows Vista SP2, Windows Server 2008 SP2, Windows 7, Windows 7 SP1, Windows Server 2008 R2, and Windows Server 2008 R2 SP1.

Restart requirement

You may 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.

File information

The global 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 Vista SP2, Windows Server 2008 SP2, Windows 7, and Windows 7 SP1
File nameFile versionFile sizeDateTimePlatform
Locale_nlp.x86Not applicable419,69607-19:16Not applicable
For all supported x64-based versions of Windows Vista SP2, Windows Server 2008 SP2, Windows 7, Windows 7 SP1, Windows Server 2008 R2, and Windows Server 2008 R2 SP1
File nameFile versionFile sizeDateTimePlatform
Locale.nlpNot applicable419,69607-19:16Not applicable
Locale.nlpNot applicable419,69602-21:21Not applicable

Issues that this hotfix rollup resolves

Issue 1:

Assume that you run a .NET Framework 4.5-based application in order to obtain the new currency symbol for the Turkish Lira. If the user locale for the computer is set to a non-Turkish locale, the Turkish Lira symbol is not displayed.

Note To apply this update, you also have to install update 2739286. For more information about update 2739286, click the following article number to view the article in the Microsoft Knowledge Base:
2739286 An update that adds support for the new currency symbol of the Turkish Lira in Windows Vista, in Windows Server 2008, in Windows 7, and in Windows Server 2008 R2 is available

Issue 2:

Assume that you have a .NET Framework 4.5-based Windows Form application. When you click a menu item to open a child window in the application, interactions with the menu and child window behave incorrectly.

For example, you may experience the following:
  • When you open a context menu in the child window, the main window form takes the focus.
  • You cannot use mnemonics to access a menu item.
This issue occurs because the IMessageFilter interface is unhooked too aggressively. Therefore, the .NET Framework 4.5 does not filter menu-related window messages.

For more information about how to use the IMessageFilter interface, go to the following MSDN website:

Article ID: 2756203 - Last Review: 11/20/2012 03:32:00 - Revision: 1.0

  • Microsoft .NET Framework 4.5
  • kbqfe kbfix kbsurveynew kbexpertiseadvanced kbhotfixserver KB2756203