The last couple of weeks, I have continued to get CC-506 errors for Schwab. No other accounts currently have this issue. I updated to R63.20 HF1 today and face the same issue.
I constantly have to deactivate the Schwab online setup, clear the financial institution and account number fields, close Quicken, reopen Quicken. Once Quicken is opened back up, I then have to open the Account List, Add Account, select Schwab, go through the Account link process for Schwab. Schwab displays the right accounts, and they are successfully authorized. I then get a message "Sorry we encountered an error. (it's not your fault)" every single time (screenshot below).
I then go through the "Try again now" and click "Start Over" and the process basically goes through the "Add Account" process again, except this time it locates the account and wants to add them. So it works this one time (last screenshot below). However, when attempting to Update Transactions, I get the same CC-506 error and have to go through the same process every time I want to update Schwab.
Please help.