Unable to install KB2934520 - Microsoft .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2 for x64 based Systems (KB2934520)

Hello Ganesh,

Welcome to Microsoft Community Forum.

I understand how frustrating it could be when things do not work as expected. I will certainly help you with this issue.

This Windows Update problem may occur if one or more of the following conditions are true:

a. If the Windows Update database is corrupted.

b. If the Background Intelligent Transfer Service (BITS) service &Cryptographic Service do not receive a content link header.

c. If a required system file is registered incorrectly.

However, before we proceed I would require some more information to assist you better.

What is the error code details of that failing update in Windows Update history?

In the meantime, I would suggest you to try the following methods:

Method 1:

Try to run the Windows Update troubleshooter and check if it helps.

If the above troubleshooter doesn’t help, then try method 2.

Method 2:

Try to run the Microsoft Fixit to reset the Windows Update components and then check if it helps.

How do I reset Windows Update components?

Note: If the above fixit doesn’t help, then try to do manual steps.

Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: How to back up and restore the registry in Windows

Hope this information is helpful. Please do let us know if you need further assistance, we’ll be glad to assist you.

Thank you

I followed those steps you suggested and no results

the error I get is  80246002    and the d/l  stops at 89%

I've been looking for a solution since January 13th. If I right click on the start button in 8.1 it keeps offering me to update and restart over and over and never goes away after restarting. I need help with two updates. Error code 8007371B for both updates.

Security Update for Internet Explorer Flash Player for Windows 8.1 for x64 based Systems (KB3024663) and Microsoft .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2 for x64 based Systems (KB2934520).

Both of these failed several times in the review of my update history actually 19 times it tried to install and failed. Tried both solutions which did not work.

I cannot even restart pc on my own because it tries to update again. Lets just say if I installed something a program etc and wanted to restart it would try to update a restart again. Something is just not right here. I'm getting where I don't want to even restart pc anymore. To avoid this I shut down instead!

Dear Amit,

                     I apologize for taken so much time to reply.

Please give me some time to work on your troubleshooting steps provided.

I will revert soon.

-- Ganesh

Hello Ganesh,

Thank you for keeping us updated on the status of the issue.

I would like to inform that if the above suggest steps didn’t help, then then we need to repair the .Net Framework. To do so, follow the steps from the below article.

Please ignore the article title and follow the steps mentioned in the article to resolve the issue.

You receive error 0x643 or 0x80070643 when you try to install the .NET Framework updates by using Windows Update or Microsoft Update
http://support.microsoft.com/kb/KB976982

Hope this information helps.

Please reply with the results, we’ll be glad to assist you.

Thank you

Hi Amit,

                I have some fresh updates on the mentioned issue,

a) I found no issues while installing other windows updates. I was able to download and install the following update without any issues today,

b) The issue lies with only with the update "Microsoft .NET Framework 4.5.2 for Windows 8.1 and Windows Server 2012 R2 for X64-based systems (KB2934520)"

I tried installing the above update manually after downloading from the site,

https://support.microsoft.com/kb/2934520

Download the .NET Framework 4.5.2 (Offline Installer) package now.

Hello Ganesh,

Thank you for keeping us updated on the status of the issue.

I would suggest you to run the .NET Framework Cleanup Tool and then try to install the updates.

To do so, refer the steps from the following link: http://blogs.msdn.com/b/astebner/archive/2008/08/28/8904493.aspx

Important this section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: How to back up and restore the registry in Windows

Please reply with the results, in order to help you fix the issue.

Thank you

The clean up utility worked for me. It didn't take long to run it, and restart and then try installing the KB again. Less than 5 min.

Thank you

Hello John,

I am glad to know that we were able to fix the issue. Your efforts to resolve this problem is very much appreciated.

Please feel free to reply, in case you face any other issues with Windows in future.        

Thank you

Hi John,

After running the tool did you go to Windows Update to update or did you go to the website to install.

I ran the tool last night, then I went to windows update and hung for over 5 minutes and then failed to install. Maybe I need to do a refresh on laptop to see if that will help. Updates are coming around in a week and still haven't fixed this two updates. Lots of failed updates! I tried all suggestions above.