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In my %windir%\Microsoft.NET directory I see NETFXRepair.exe with a lot of NETFXRepair.xxxx.dll files.

What are these files used for?

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migrated from May 1 '12 at 6:23

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Why did this get a downvote? its a valid question.. with no 100% answer – Peter Dec 13 '12 at 8:32

It's obviously a system file; you can tell this because it's located in the Windows directory.

More specifically, it's a component of the .NET Framework. This is rather obvious by virtue of its containing folder's name. According to this blog post, the executable and its associated DLLs are components of version 4 of the framework.

It says (and you can infer from the name) that they are

Resource files for .NET OS upgrade repair.

More importantly, why are you messing with these files? Are they causing you a problem?

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My question was out of curiosity. I was going to check whether ildasm.exe is located under %windir%\Microsoft.NET\Framework\v4.0.30319 when I saw these files. – Nullptr Dev May 1 '12 at 6:28

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