Thanks for the follow-up question about the investigation, Greg6464.

I totally see the urgency to get this resolved. Looking at our records, there's no estimated turn around time when the issue will be sorted out. Once an investigation is initiated, our engineering team will work with your financial institution to determine what's causing it and create a permanent fix as well.

Make sure to contact our phone or chat support teams and let them know to add you to the list of affected users for INV-78052. You will also be notified via email as soon as the banking connection is sorted out. 

Here's how to reach out to them:

1. Click the Help menu in the upper-right hand corner of your QBO account.
2. Type in "Talk to a human" in the chatbox, then press Enter. Then, type in the same keyword and press Enter one more time.
3. Select No.
4. Choose between Chat with us or Have us call you.

Let me know if that's all the information you need about the banking error with Santander Bank. You can also post more questions if you need anything else from the QuickBooks Community.