We're using a licensed InstallShield 2011 Professional version for a project and it is currently installed on a Windows machine that's running a very old OS (i.e, Windows7)

We intend to migrate to a new machine. But we have lost license information (The person who purchased the license is no longer working with us).

We can still see the Serial Number in the "About InstallShield" on the Installed Machine.

We are also looking at the possibility of upgrading to the latest 2025 version. I have tried to request a trial version twice, but i have not received any email.

Please help and suggest.