Open the , type "Firewall," and select Allow an app through Windows Firewall .
When TeamViewer is blocked by a firewall, users may experience the following symptoms: teamviewer blocked by firewall
If you are using a VPN or a Proxy server, TeamViewer might struggle to authenticate its ID. In TeamViewer, go to > Options > General . Under Network settings , click Proxy Settings . Open the , type "Firewall," and select Allow
Press Win + R , type %appdata% , and delete the folder. teamviewer blocked by firewall
Locate TeamViewer and set its access to or "Trusted." 4. Address the "Commercial Use Suspected" Block