HDD GURU FORUMS

Hello community.
A months ago I have created Microsoft Prpject document. I could open it at the beginning, but now I am struggling with this error message: Project cannot recognize this file format.
Do you have any suggestions how to work around it? Any suggestions ideas would be great.

Office 2016
Windows 10

Did you open it in another app ? Other person opened it in other computers that could be using other versions of the software ?

Do you have backups ?