Dear Aabidah34, Thank you for your message but the issue was not with the Hyper-V Virtual machine creation. The problem is the 3D graphic under Hyper-V and its compatibility with that version of PVsyst. I am planning to test version 7.0 under Hyper-V in the near future just for curiosity. I think it will work since the software has evolved. After making the tests I will post the results.