If you try to log in to the whatsapp desktop application from your phone but it keeps showing an error message "Unexpected Error" then this tutorial will guide you on how to fix this problem. Restart WhatsApp and Your PC Close the WhatsApp Desktop app completely. Restart your computer. Open the app again to check if the issue is resolved. Check Your Internet Connection If you are using a VPN or proxy, disable it temporarily and see if the issue is resolved. Update WhatsApp Desktop App Reinstall the WhatsApp Desktop App