Just today, getting this error. Any idea when this issue will be resolved?
@Jack Scripps I can't find any active Quicken Alerts for your issue, but here is a Support Article that specifically addresses CC-501 errors with Charles Schwab:
https://www.quicken.com/support/errors-when-updating-or-adding-charles-schwab-accounts/
Most of the time these CC-501 errors resolve themselves, but I think the "standard" advice is to wait 24 hours and try again. If the error persists then, it is advised to contact Quicken Support.
https://www.quicken.com/support/error-when-using-online-services-cc-501/