a couple of things to try initially
first this is usually when its trying to log into quicken to check your vault password ***** that is the same as your intuit id
the easiest thing to do is to go to remove the vault and replace it with one that has its own password
tools / remove vault and all passwords
then do the one step update and you will have to put each bank password ***** again
if you check the box to save it that will create a new vault and try to give it its own password ***** than letting it default to your intuit id
another simple thing that you can try if the quicken was working recently is to do a system restore to a time when it was working
System restore instructions - windows 7 8 10
hold the windows logo key and hit R
in the box that appears type
select restore to an earlier date.
Under the "suggested restore" which is usually not old enough to help is a link for "OTHER RESTORE POINTS"
click that if the suggested ones are not BEFORE THE PROBLEM STARTED
choose a date from the calendar that is BEFORE you experienced the problem
hit ok / restore
the computer will start to shut down
a restoring settings box will appear with a status bar
when it finishes your computer will restart with the same settings it had on the date you restored to. your data will not be affected.
It is not perfect. But it fixes a lot of things.