Attaching the Script debugger to process '[XXXX] IEXPLORE.EXE' on machine 'NAME' failed

Question

Few days ago I started getting the following error when I try to run/debug my web application using F5 in Visual Studio 2008:

Attaching the Script debugger to proces

Answer 1

Having exited all instances of Internet Explorer (but not VS), I tried

regsvr32.exe "%ProgramFiles(x86)%\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll"

but got an error message LoadLibrary(%ProgramFiles(x86)%\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll) failed - 0x0000007e.

After checking the file system I found the DLL and tried this:

regsvr32.exe "C:\Program Files\Common Files\Microsoft Shared\VS7Debug\msdbg2.dll"

which fixed it.