Hello,

My license # is L115250.  I installed Zemax 21.1.1 to my new windows laptop.  Then I transferred this license from my old laptop to this new one.  So I typed in the transfer code.  But I got the error message:

The key service does not work correctly.  please restart your machine and try agian.  If it is not resolved, please contact with Zemax service.

So I restarted my laptop, but I got the same error message.  I think the key may be for an older Zemax version and I did not update the license file.  But the installation on the my new laptop is the most updated Zemax version.  Could that be the root cause?

Thank you very much!

Cheers,

Xi