My .NET Framework 4 updates fail whenever Windows Update tries to install them

I am not quite sure when I started noticing it, but I realized that Windows had updates to install every single time I wanted to shut down my laptop.  I went and checked my update history, and there was a long list of failed updates, all of them security updates for .NET Framework 4.  I tried repairing my .NET installation with the standalone installer, and it failed (The logs are here:, the text file is the one linked to in the html file.)  I also had a failure when trying to install Visual Studio 2010 Service Pack 1 through Windows Update, allthough I do not have the logs from that.

EDIT: I forgot to mention that I am running Windows 7 Home Premium (x64)


Question Info

Last updated February 17, 2019 Views 16,897 Applies to:



Method 1:

I would suggest you to refer to the link and check if it helps:

Error code "0x8007066A" or "66A" when you use the Windows Update or Microsoft Update Web site to install .Net Framework updates


Method 2:

Refer to the link and check if it helps:

How do I reset Windows Update components?


I also suggest you to refer the link and attach a screenshot of the screen.


Rohit S

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