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1. There was a similar question before - "Student edition - License invalid file or format": https://community.ptc.com/t5/PTC-Education-Forum/Student-edition-License-invalid-file-or-format/td-p...
2. Article - "Error "invalid file or format" in the license status for the license summary while installing Creo Parametric": https://www.ptc.com/en/support/article/CS185444
The program launcher doesn't even seem to send a license file with the download. When I look in the file folder Licenses it is empty.