Why Does the QuickBooks Bank Connection Stop Working?

https://quickbookhelpdesk.com/blog/quickbooks-banking-connection-errors/

QuickBooks Online communicates securely with your financial institution to download transactions. If the communication is interrupted, your bank account may disconnect or stop updating. Connection problems are often related to account settings, browser issues, internet connectivity, or temporary banking system maintenance. Understanding the possible causes makes troubleshooting easier.