I can't debug, mscorlib.dll error
<p>  When i start my project (in Debug or Release, Visual Studio 2015), I get this error:
</p>

<p><a href="https://i.stack.imgur.com/wMHIn.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wMHIn.png" alt="Error on start project "></a></p>

<p>
  I tried to repair my .NET framework, but I got no success, I cant debug this error because it isn't code error.
</p>

<p>Which can cause it?</p>

<p><br>
How can I repair it?</p>

<p><br>
How to prevent this?</p>