installation license problem : success/BUT/ invalid file or format

Try making the file name shorter, like license.dat.

Same issue:

• "Student edition - License invalid file or format": https://community.ptc.com/t5/PTC-Education-Forum/Student-edition-License-invalid-file-or-format/td-p/655205 
• "Creo 8 student License invalid or format": https://community.ptc.com/t5/PTC-Education-Forum/Creo-8-student-License-invalid-or-format/td-p/758858 

Hi ​@AY_14579102,

I wanted to see if you got the help you needed.

If so, please mark the appropriate reply as the Accepted Solution. It will help other members who may have the same question.
Of course, if you have more to share on your issue, please pursue the conversation.

Thanks,
Anurag