Right-click on the TeamViewer icon on your desktop, point to “Run as”, and then select Administrator.Ĭheck if it works. If it doesn’t, run TeamViewer as administrator. Run TeamViewer and see if this fixes the problem. If TeamViewer is not listed, click Browse, navigate to the installation folder of TeamViewer, select the main executable (for example, TeamViewer.exe), click Open, and then OK all through out. Select TeamViewer from the list then click OK. To unblock TeamViewer from the Windows Firewall, click Start, Control Panel, Security Center, and then select Windows Firewall. You can fix this by allowing the program to pass through the Windows Firewall by adding it to the exceptions list. Here, it is possible that Microsoft Windows is blocking TeamViewer from accessing the internet.

You normally get this problem when the program is being blocked by the operating system. Since “No connection to Master Server” is displayed on top the dialog box and the message says “Please check your internet connection”, this means the TeamViewer application cannot establish a connection to the internet. TeamViewer is not connecting to Master Server, how can i do?

Teamviewer will not connect