Hello! 

Can you attach a screenshot of this page from your machine? 

http://localhost:1947/_int_/devices.html 

That will tell me the license status. Also, is this installed on a standard PC, a virtual Machine or on a Mac with bootcamp (dual boot to Windows)?

 Has there been any hardware changes recently just before the license stopped working? 

Hey Don!

I have attached a screenshot of the requested page. I use a standard WindowsPC and no hardware changes were done. 

Thank you for your help.

Thanks! 

It looks fine, odd. Can you click the “C2V” button on that page and attach the C2v file it downloads to the ticket? i can see if the license system detects any problems directly. 

Hey!

I was not able to attach the c2v file here. I have created a google drive link with the c2v file instead. 

https://drive.google.com/drive/folders/1lfCNtJhPk7Ldk7a5A8C4lJb_qm5MeR6k?usp=sharing

Thanks!

Thanks, no errors were detected in the license . I suggest running C:\program files\zemax Opticstudio\opticstudio_prerequisites.exe, that may get the license working again. 

Hey!

I installed the Opticstudio_prerequisites.exe, that did not change anything. I am still facing the same problem.

OK sorry hat didn’t work. This is a strange issue. Can you try going to the “view license” tab in Zemax License Manager and click “Default”? If that doesn’t resolve it, ill see if we can get this license disabled and replaced.   

Hey,  Zemax license manager opens up when I try to open OpticStudio and the license is made default, still no luck. Thanks for your help! Please keep me updated. 

Ok i got approval for replacement. You should have just received a new license number and  activation code .

Hey Don!

I received it! 

Thank you so much for your help!