How to fix 'itunes library.itl' not valid after power outage on Windows 10?

I have windows 10 running Itunes 12.12.8.2. I try to make backup copies of the itl and xml files every week or 2. My power went out for a few seconds today and then when opening Itunes I got the message that itl was not valid and it created a new one.

I have tried different backups I have from the past few weeks. Itunes will load them fine. Then when I close Itunes and open it back up, I get the message that the itl is not valid again.

I uninstalled itunes and reinstalled. I did a check for errors on the hard drive and did not have any.

[Re-Titled by Moderator]