Hi there, don052. Thank you for doing the troubleshooting steps to fix the error when opening the QuickBooks Online (QBO) Desktop app.

Since you've mentioned in your other post that you can access QBO without using the VPN, I recommend reaching out to your IT personnel for them to determine the best course of action.

If you want to keep using your VPN while opening QuickBooks, I recommend enabling split tunneling or whitelisting the QBO Desktop App from your VPN.

Feel free to reply to the thread if you need further assistance related to QuickBooks. We'll be here to help.