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  • charla-fonda

    tried to install Security Update for .NET Framework 4 on Windows XP.And I got the error code 66A I run Avg is this the issue???

    Category : Operating System

    asked on 13th Aug, 2011 | 1 Answers | Log in to answer

uttam
ans

This problem can be caused by system corruption on your computer. This occurs for various reasons, including but not limited to other applications overwriting of .NET files or corrupted hard disk sectors.
Method 1: Repair the .Net Framework 4 installation
Windows Vista and Windows 7 users follow these steps to repair the .NET Framework 4 installation:
1. Close any currently running applications
2. Click Start, and type Uninstall in the Search box and then click Uninstall a program
3. Double-click Microsoft .NET Framework 4 Client Profile to start the .NET Framework 4 Client Profile Maintenance application
4. Select Repair .NET Framework 4 Client Profile to its original state and click Next
5. Allow the repair to complete and then click Finish
6. Click Restart Now to restart your computer
7. Visit Windows Update, and attempt to install updates again.

Windows XP users follow these steps to repair the .NET Framework 4 installation:
1. Close any currently running applications
2. Click Start, click Control Panel and then click Add Remove Programs
3. Click Microsoft .NET Framework 4 Client Profile from the list of installed applications and click Change\Remove
4. Select Repair .NET Framework 4 Client Profile to its original state and click Next
5. Allow the repair to complete and then click Finish
6. Click Restart Now to restart your computer
7. Visit Windows Update, and attempt to install updates again.

If the issue is not resolved, go to method 2.


Method 2: Fix MSI software update registration corruption issues
To fix MSI software update registration corruption issues, click the link below to view the KB article and run the automated Fix it: http://support.microsoft.com/kb/971187

Visit Windows Update, and attempt to install updates again. If the issue is not resolved, go to method 3.


Method 3: Download and install the Update Manually

To manually download and install updates, follow these steps:
1. Visit the following Microsoft Update Web site:
http://update.microsoft.com
2. Click Review your updated history to view the update history and to examine the error message to determine the update that you want to install.
3. Visit the following Microsoft Web site:
http://www.microsoft.com/windows/downloads/default.aspx
4. Type the Knowledge Base (KB) article number in the search window on the Downloads page, and then click GO.

For example, if the KB article number that is listed for the update is KB123456, type 123456 in the search box, and then click GO.
5. In the Search Results list, locate the KB article that you searched for, and then browse to that article.
6. Search through the KB article, and then click the link that resembles the following:
Download the package now
Note If you are prompted to "validate Windows," follow the instructions to validate Windows, and then continue with the download.
7. Click Download, and then click Save in the File Download dialog box.
8. In the Save in list, click Desktop, and then click Save.
9. On your desktop, locate the file that you downloaded, and then double-click the file to install the update.

Note If the update is unsuitable for your computer, the installation of the update may still fail.


Method 3: Repair the .NET Framework
To repair the .NET Framework you must uninstall multiple versions of the .NET Framework by using the .NET Framework Cleanup Tool, and then reinstall the components.

To do this, follow these steps:
1. Download the .NET Framework Cleanup Tool from the following link:
http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx
2. Using the .NET Framework Cleanup Tool, uninstall the .NET Framework 1.0, 1.1, 2.0, 3.0, and 3.5.
Note The cleanup tool does not let you remove the .NET Framework 2.0 in Windows Vista or later versions because the .NET Framework is installed as an operating system component.
3. Restart the computer.
4. Download and install the following components:


Here’s to Good Karma

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