compilation error -1073741502 Visual Studio

Question

I've got compilation error -1073741502 while debugging from Visual Studio but not under IIS.

In logs I also found error:

System.Web.HttpCompileException (0x80004005):The external component created an exception

• Deleting of ASP.NET files does not help

• Reinstalling ASP.NET does not help

• Reinstalling Visual Studio does not help

Answer 1

The reason was: I kill child proccesses in Application_Start .

We need this for restarting child processes after site was reset.

Then you under Visual Studio there is already two child processes. It's look like you should not kill them for normal work.