c++ - msvcr90d.dll not found in debug mode

Question

I found MSVCR90D.dll not found in debug mode with Visual C++ 2008 question but none of given answers really gives answer to the question. Most of them point to turning off incremental linking but don't explain the true cause of the error and how it can be fixed without turning off incremental linking.

I'd like to mention that my situation is a little different than the one in the original question. I am using C++ compiler from Visual Studio 2008 but within Qt Creator not within Visual Studio.

Anyone?

Answer 1

Simply installing VS2008 Service Pack 1 will fix the problem, if it's an error where the Debug CRT is totally missing from the sxs folder.

I had this happen to me with a fresh install of VS2008 on 64 bit Windows 7 and a solution containing a VC++ project. The debug build would crash when the C++ assembly was loaded at runtime, with a side-by-side error.

On Vista and Win7 (but not XP) the SxS error gives details about exactly what assembly it tried and failed to load - in this case it was VC90.DebugCRT 9.0.22.19. I checked the (embedded) manifest for the VC assembly and sure enough, it included a reference to this assembly and version.

Checking the sxs directory (%System Drive%WindowsWinSxS) showed that there was no VC90 DebugCRT installed in side-by-side at all! I had installed the VC++ runtimes, but these don't include a debug runtime. VS2008 is meant to install a debug runtime, but it wasn't there.

Turns out the original release of VS2008 doesn't install a 64 bit VC++ DebugCRT, but installing SP1 does. Once I'd done this, no more runtime exceptions and side-by-side errors.