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Welcome to the Community, @pkent1. Thanks for sharing with me the exact error code you received as you reconnect your bank account with QuickBooks.
This error code means that the user ID or password is incorrect for the bank account you’re trying to connect. To fix this error, ensure that your sign-in info is correct.
Once you’re sure about your user ID and password, move on to step 2 outlined in this help article: Fix bank error 103. It has a step-by-step guide towards resolving this type of error.
For future reference, here's an article in case you'll encounter any other error messages: What to do if you get a bank error or can't download transactions in QuickBooks Online.
Feel free to message again and post some more of your banking concerns in the Community. We're always here to help in any way we can.
Hope you’re doing great. I wanted to see how everything is going about the banking error concerns you had yesterday. Was it resolved? Do you need any additional help or clarification?
If you do, just let me know. I’d be happy to help you at any time.
Looking forward to your reply. Have a pleasant day ahead!