You can also try opening a dos window and then type in:
set Path=C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\
Then from the same dos window, try to start Workbench by typing in:
"C:\Program Files\ANSYS Inc\v212\Framework\bin\Win64\runwb2.exe"
Does it start?
You are navigating away from the AIS Discovery experience