As usual, you are giving TERRIBLE, INCOMPLETE INFORMATION.

It is NOT any of these issues: 

• QuickBooks company file is damaged or corrupted.
• The same file is opened on a shared network.
• Using incorrect methods to open certain files.
• Using the wrong QuickBooks version to open files.

There is no file called "QuickBooks.exe " is it called "QuickbooksPro2021.exe". And when I hold Crtl and double click it it does not open the program, it asks me if I want to allow it to make changes to this PC. And then it goes to the install wizard. I am not trying to install Quickbooks. I am trying to open my existing company file. 

I am NOT going to follow your instructions because you are not even talking about the same problem. 

I cannot be dead in the water and wasting my whole day on trying to fix your bugs. I can't even make a backup first as the program crashes, or if it does stay open, tells me it wants to rebuild the file and the backup failed. 

Your software is becoming unstrustworthy. A year ago I would have recommended it to everyone, now I would not recommend that anyone who cares about their data would use any of your products. I am stuck with you for now and hate it.