Restore Windows Firewall settings
If you've changed some Windows Firewall settings and you want to undo your changes, you can restore the firewall settings to the original (default) settings.
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Open Windows Firewall by clicking the Start button
, and then clicking Control Panel. In the search box, type firewall, and then click Windows Firewall.
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In the left pane, click Restore defaults.
If you're prompted for an administrator password or confirmation, type the password or provide confirmation.
Restore defaults link in Windows Firewall
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In the dialog box that appears, click Restore defaults. At the confirmation prompt, click Yes.