inability to install Creo 8 student account. getting invalid format error! urgent help needed

[VladimirN · Accepted solution]

Take a look:

• "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 
• ""Invalid file or format" status under License Summary while installing application, like Creo": https://www.ptc.com/en/support/creo-admin-troubleshooter/other-symptoms/invalid-file-format