I found this on a site by Google searching your error.

"I found that DotNetWindows VAT (Vulnerability Assessment Test) from nVision Software Technologies was installed. I've uninstalled it but the same error still occurred.

I found that even after uninstall folder C:\WINDOWS\NVisionInstrumentationConfig still existed and dnvexceptionhandler.dll was still loaded by w3wp.exe.

Only when I manually renamed C:\WINDOWS\NVisionInstrumentationConfig folder , the error disappeared."

Hope it helps
-Josh