Hello Rakesh,
OK. I get it, that you never get the 3D button down.
1). If it is a student version, I suppose it may be a limitation because I could export 3D model in PEmag.
2). Could you try to reinstall the software perfect? disable all the security apps like anti-virus, etc. and uninstall package completely before reinstalling it.
It still does not work after reinstallation, unfortunately, this question is beyond the scope for Ansys employees to answer on a public forum as it requires to verify the system. We encourage other participants on the forum to help with your problem.
HDLI
You are navigating away from the AIS Discovery experience