How do I fix Banking Error 105?
https://quickbookhelpdesk.com/blog/banking-error-105-troubleshooting/
QuickBooks Banking Error 105 usually occurs when communication between QuickBooks and your financial institution is interrupted. Temporary bank maintenance, incorrect login information, internet connection problems, security verification, and software issues are among the most common causes. Checking your internet connection, signing in to your online banking account, verifying your banking credentials, refreshing the connection, updating QuickBooks, and reconnecting your account can resolve the issue in many cases.