Microsoft Visual C++ Runtime Library This application has requested the runtime to terminate in an unusual way.

If you get this error while trying to open active directory sites and services.

Go to start and run mmc. There try to open this active directory sites and services snap-in.
In Active directory sites and services, Open File -> Options and use Disk Cleanup to delete the changes to the console view that are saved in your profile (Click Delete Files button).

If this won't correct your problem, try running sfc /scannow.