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Note: This behavior does not apply to TeamViewer 9 (or later).

TeamViewer waits several minutes after windows-start until it tries to listen on Port 80 (if this Port is not taken by another application). If your application has not taken the Port within that time-frame or the application has not started automatically, TeamViewer might have taken the Port.

You can disable this behavior in TeamViewer version 8. Simply 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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Last update:
‎19 May 2020, 8:48 AM
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