CC-800 error in Wells Fargo and Barclays Bank

@aeronaut54 - have you validated your file or tried a "Copy File"?  Here is a link to a support article that might help.  

https://www.quicken.com/support/advanced-data-file-troubleshooting-correct-problems-quicken-windows

The directions for both processes are under the third step in the support article.  The one caveat is that online services for all accounts will be deactivated and will need to be set up again after you do the "Copy File".