Hi there, @lyndsay. When the error message appears, do you see a specific error code, such as 103 or 104? That detail will help me provide the exact solution for your situation.
It's also a good idea to check your bank's website for any ongoing maintenance or security updates that might be preventing HSBC from connecting to QuickBooks Online (QBO).
If everything looks normal on the bank's side, you can log into QBO using incognito/private window. Sometimes, browser cache or stored data can interfere with the bank connection, and using a private window helps rule that out.
In the meantime, you can keep your books up to date by manually uploading your bank transactions using a CSV file.
If you have follow-up questions, please don't hesitate to click the Reply button.