In some cases, it was found that the system’s Firewall was restricting TeamViewer from working properly. Click on OK at the bottom to save the changes and restart the app to see if it makes the situation better. In the Show advanced options prompt, uncheck the box next to the Use UDP (recommended) checkbox.Ĥ. Once Settings is opened, select Advanced from the left-sidebar and then click on Show advanced options.ģ. Open the TeamViewer app on your Windows 11 PC and click on the Settings icon at the top right corner.Ģ. So, if you’re also having similar issues with TeamViewer, consider disabling UDP in your TeamViewer app.

Notably, this can also fix the freeze and delay issues with TeamViewer. Some users in TeamViewer’s official forum said that disabling the User datagram protocol (UDP) in the TeamViewer app fixed all the connection issues for them. So, try all the below-listed workarounds to eliminate the TeamViewer not working issue on your Windows 11 PC: 1.

TeamViewer Not Allowed Through Firewall.

These are some of the most common reasons behind the TeamViewer not working issue on Windows 11: 4 Final Words Why Is TeamViewer Not Working on Windows 11?

Windows 11 windows defender not working