Set:

Windows 10

managed

Problem:

System Update

Solution:

Unregister *.ocx files

open cmd window with admin rights in C:\Windows\sysWow64\

...

then try opening the MWC again

Alternative:

navigate to this site:

https://appuals.com/how-to-fix-the-comdlg32-ocx-missing-error-on-windows/

Download the comdlg32.ocx

Copy the file to:

C:\Windows\sysWow64\

C:\Windows\System32\

then:

egsvr32 /u comdlg32.ocx

egsvr32 /i comdlg32.ocx

Comprehensive guide:

https://appuals.com/how-to-fix-the-comdlg32-ocx-missing-error-on-windows/