Why do I get the message "This site is running TeamViewer"?
TeamViewer will wait several minutes after windows-start until it will try to listen on Port 80 (if this Port is not taken by another application). If your application does not take the Port in that time-frame or the application is not started automatically, TeamViewer might have taken the Port.
You can disable this behavior in TeamViewer version 5.1 to 8. Therefore, open the TeamViewer options under Extras > Options > Advanced. Enable the option Don't use incoming port 80 (recommended for web servers only) so that TeamViewer won’t try to take the Port again.
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