All my accounts have disconnected and when trying to reconnect I receive Bank Error 106. Can confirm that my bank accounts are still open with my bank

I appreciate your initiative in resolving the bank connectivity issue in QuickBooks Online (QBO), hello235. Our team is committed to addressing this promptly so you can reconnect with your bank and return to business quickly.

To ensure a swift resolution, our dedicated live support team is here to assist you. They have the appropriate tools to further check the cause of the error and provide clear guidance on the next steps to take. Here's a guide to complete the procedure:

1. Log in to your QuickBooks Online (QBO) account and go to the Help (?) menu.
2. Select the Search tab.
3. Enter a brief description of your concern in the Search field. 
4. Click the Contact Us button.
5. Choose a way to connect (Have us call you or Chat with us). 

As a workaround, opt to manually upload your financial data to keep your account updated.

Once your connection is restored, your recent transactions will automatically download. Categorise and match them to your existing entries to avoid duplicates and efficiently keep track of your business's growth and activities, ensuring everything is accurate.

I value your patience regarding this matter. If you have clarifications or questions concerning your bank connectivity with QuickBooks, just let us know in the comments. We'll make sure to respond as soon as possible.