Never install .NET SDK 1.1 where VS 2003 installed

Don't ask me how I got to it, but I installed .NET Framework SDK 1.1 on my computer, which had a previous installation of VS 2003 on it. (The VS 2003 itself has .NET Framework SDK 1.1 as part of its installation, so you don't need to re-install it). Even worth - after you install the SDK after VS 2003 - you wouldn't be able to compile any project, receiving error message in style of: Build log was saved at "file://d:\MyProject\BuildLog.htm" 1 error(s), 0 warning(s) It seems that there is no resolution for that, despite here and there people claim that it could be fixed by elimination of HKLM\Software\Microsoft\Command Processor\AutoRun key. As for me - I was able to fix it only by running repair of VS 2003 .