I appreciate your sharing detailed information about your issues, DKaye.
QuickBooks update error #12007 can be faced by a user when QuickBooks cannot connect to the internet. This may be due to problems with the browser, antivirus, or firewall.
Since the error continues, let's try restarting your computer and opening your company file in single-user mode. Then, update QuickBooks Desktop to the latest release to keep your software up-to-date.
If you're getting the same result, determine whether another application or process is causing the error. You may consider consulting help from a computer or IT expert to check the security software causing the error.
Once everything is set, you can transfer your file to the Online version of QuickBooks. Here's an article for a detailed process: Move from QuickBooks Desktop to QuickBooks Online.
I'll be around if you need more help working with QuickBooks. Keep safe!
