Interesting that there are different Error codes for this. I'm on a Mac and have been getting 20754. Having this same problem for months myself. Sigh.
If you haven't done
so already, I'd say it's time to call Quicken Support on the phone and request
help. Let them do a screen share session
with you to review the situation on your computer, to determine the nature of
the problem and to figure out how to fix it.