Re: Failed to compile global shaders
There is a solution for this error.
https://support.microsoft.com/de-de/help/2728613/s1023-error-when-you-install-the-directx-sdk-june-2010
Also, run the Windows System File Checker Sfc /scannnow and post the concluding message.
If it is not too much effort for you a fresh installation of Windows might still be a easier solution than a complicated troubleshooting, but that is of course your decision. 🙂