Itunes is prompting me for a password I never set.

I'd had a lot of issues updating to IOS 14. Finally it did. When it was time to restore the back up my computer prompted me for a password that I did not set when backing it up this morning.

Now I've lost pretty much everything unless I can restore my back up from this morning.

Again I never checked encrypt local backup, set an encryption. I've tried my passcode, "0000", password, prior apple id passwords.

Nothing is working. Very disappointed with this roll out.