We can't update sign-in info. Arter Login and Pass we received SMS from bank when we submit QB show us 4000 Error! We tried many times.

Good day, finance114.

I'm here to help update your bank account sign-in information in QuickBooks Online.

Which bank account you're trying to update the sign-in information? This way, I'll be able to see if there are related issues with your bank.

Before updating the sign-in information in QuickBooks Online, you'll need to update the information first from your financial institution's website.

Once updated, you can follow the steps below to update it in QuickBooks.

1. Select Banking.
2. Select Update. Make sure you have selected the appropriate account. QuickBooks Online tries to connect to your bank to manually update your account.
3. Enter your updated username and password in one of the following ways:
   • If Error 103 appears, select the Reconnect my account link and enter your new username or password.
   • If no error message appears, select the Edit ✎ next to the bank name, select Edit sign-in info, and enter your updated bank website username or user ID and password.
4. Select Save and connect. QuickBooks Online will try to connect with your bank to verify your information.
5. Once you see a confirmation message, select I'm done, Let's go!

You can get more details about this process in this article: How to update your bank account sign-in information.

Feel free to drop me a reply below if you have any other concerns. I'll be around to help you out.