I solved it with the following steps:
1 - uninstall Ansys
2 - clear the Ansys folder (where you've installed it)
3 - clear the Ansys cache ( here some previous configs are set, which can causes some troubles)
4 - reinstall Ansys
5 - update virtual environments variables (you must certify that the path of the application is correct, for me the program was calling an old path from an old Ansys Version)