Anyone, please help! Microsoft Support Diagnostic Tool has stopped working

Hi All, first time here, hoping someone will be able to help me or put me in contact with someone who can.

I am trying to update my computer. I got error 80073712. I was told to try and use the Windows System Update Readiness tool. This is a .diacab file. Tried to run this using win+R then typing in msdt /cab [file path]. Microsoft Support Diagnostic Tries to open and run but crashes with the following:

msdt.exe - Application Error
The application failed to initialize properly (0xc0000005) to terminate the application


Problem signature:
Problem Event Name: BEX
Application Name: msdt.exe
Application Version: 6.0.6001.18000
Application Timestamp: 47918ba6
Fault Module Name: StackHash_dcb0
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 00000000
Exception Offset: 77df18c0
Exception Code: c0000005
Exception Data: 00000008
OS Version: 6.0.6002.2.2.0.256.6
Locale ID: 2057
Additional Information 1: dcb0
Additional Information 2: aabacc9a5181fc7750b4b69c315ec010
Additional Information 3: fb63
Additional Information 4: 1e622cfc82b5cfa0f686d5b81f3db8eb


Any idea how to resolve this error and run msdt.exe?