Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.
George Karnos
Ansys Employee

First, rename %APPDATA%\Ansys\v231 to v231.old
Try relaunching Workbench by right-click->run as administrator
Also, we have seen some issues when installed on a different drive other than c:\
Does it work if you uninstall and reinstall on c:\

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