Hello there, Babyboycs,
Great job for clearing the browser's cache and cookies. It's the first step to take when you get an unexpected error on your Banking page.
You can try using other supported browsers. Then, disconnect and reconnect your bank from there.
If the same issue persists, I recommend contacting our QuickBooks Online Support Team. They can further investigate what's interrupting the connection between Natwest and QuickBooks.
Here's how to get in touch with them:
- Sign in to your QuickBooks Online company.
- Select Help (?) at the top right.
- Select Contact Us to connect with a live support agent.
Let me know how everything turns out but commenting below. I'm always right here to help.
Thank you and stay safe!
We had exactly the same problem trying to connect to NatWest using the QuickBooks app.
We followed the advice earlier in this thread and signed in to QuickBooks using a browser (Firefox) and managed to connect our NatWest account on the first attempt. We closed the browser and opened the QuickBooks app and everything works fine now.