I'm using Windows 11 Home ver: R60.15 build: 27.1.60.15. I've used Quicken for 20+ years and I'm extremely familiar with it. I download and reconcile accounts every day. A few days ago a checking account did not reconcile. It reconciled the day before and only two new transactions were downloaded. The balance was now off exactly $500.00. My assumption was that somehow a $500 expense was deleted or a $500 deposit duplicated. I looked back as far as available bank statements, which was Nov 2017, and Quicken now shows my balance off $500 in Nov 2017. So the $500 error occurs before Nov 2017. Does anyone have any ideas on how/why this type of error might happen?