Other solutions are to recover from backup. Open on another machine with Project or repair the User Profile. It may be corrupt. If you can log in with another username to the PC and try to open the file.
1] Go t File --> Options --> Trust Center --> click on Trust Center Settings --> Select the option "Allow loading files with legacy or non-default file formats" and try opening the file.
2] Open a blank project and try inserting the problematic file and try opening it.