Allow me to step in, MJK999.
I've read your original post and looked into this further. Our engineers are aware of the current ongoing issue with Windows is creating multiple TMP files from the old scheduled backup time. As a workaround, you can delete those files manually.
Since this is under investigation, I suggest giving our QuickBooks Technical Support a quick call. They'll be able to add you to the list of affected users to receive updates on this.
When you do, provide this escalation number: INV-24197. Just follow the steps above to get our contact information.
I appreciate you for reaching out to the Community. Please know that this is being treated with the utmost urgency.
Tag my name below if you have any questions. I'll do everything I can to answer them.