Thanks for reaching out to us, grannixer.

We've been receiving reports about this since yesterday, but we're putting it under observation. I'll explain why.

The bank error 102 usually indicates a problem on your bank's end. They may be undergoing maintenance or experiencing server problems. Let's go through some troubleshooting steps to get it fixed. I'll show you how.

1. Sign in to QuickBooks Online.
2. Click the Banking or Transactions menu.
3. Locate your bank account and then select Update.

If you still encounter the error, please check your bank and credit card's website to ensure everything is working fine on their end.

1. Sign in to your bank or credit card's website. If you can't sign in, reach out to your bank or credit card company about the next steps.
2. Look for any messages, notifications, or alerts. This should tell you if something isn't working.
3. Review your account pages, account history, and transactions. If you can't see these, there may be connection issues.

Alternatively, you can manually upload your bank transactions to bring them to QuickBooks Online.

Here's how:

1. Sign in to your bank or credit card's website.
2. Follow your bank's instructions to download CSV files of your transactions.
3. Go to the Banking or Transactions menu.
4. Select the blue tile for the account you want to upload the transactions into.
5. Click the Link account dropdown, then choose Upload from file.
6. Locate the file you downloaded from your bank. Then hit Continue.
7. In the QuickBooks account dropdown, select the account you want to upload the transactions to, then hit Continue.
8. Follow the onscreen steps to match the column on the file with the correct field, then Continue.
9. Ensure the transactions you would like to import are selected, then Continue.
10. Click Yes to confirm, then Done.

For more details, you can read this article: Manually upload transactions into QuickBooks Online.

If the issue persists after 48 hours, please reach out to our support team for further assistance.

I'm also adding this resource for the next steps once your transactions are completely uploaded in QuickBooks Online: Categorise and match online bank transactions in QuickBooks Online.

I'll add some guides and steps if you need further assistance with standard banking feeds, let me know by adding details below. Take care and stay safe.