Can you check if the graphics driver on your machine is up to date? If it is a NVidia card, check if there are any new drivers available in the website and install it. Also, check if the windows is up to date.
Close all Ansys applications. Open a command prompt as administrator and run the below, one by one..
regsvr32.exe ole32.dll
regsvr32.exe atl.dll
regsvr32.exe oleaut32.dll
regsvr32.exe scrrun.dll
regsvr32.exe jscript.dll
regsvr32.exe vbscript.dll
Then rerun WB and see if DM launches?
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