Mrunali Barde
Ansys Employee

Hello Thirdeep, 

Can you please try the below steps and let me know?

1. Close all workbench sessions. 

2. Rename ‘ %temp%\.ansys’ to ‘‘ %temp%\.ansys.old’

3. Rename ‘AppData\Roaming\Ansys’ to ‘AppData\Roaming\Ansys.old’

4. Rename ‘Documents\Ansoft’ to ‘Documents\Ansoft.old’ (if any)
5. Try again. 

With that, can you please check if there are pending graphics drivers updates?

I hope this helps, 
Mrunali.