Edit

Firewall Port Registry Settings

  • Article

[The feature associated with this page, Windows Media Player SDK, is a legacy feature. It has been superseded by MediaPlayer. MediaPlayer has been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer instead of Windows Media Player SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Windows Media Player places entries in the registry so that firewalls can determine whether to open or close the ports that are used by media library sharing.

AcceptedEULA Registry Entry

Windows Media Player uses the following registry entry to indicate whether the user has accepted the end user license agreement (EULA).

[HKEY_LOCAL_MACHINE\Software\Microsoft\MediaPlayer\Preferences]
"AcceptedEULA" = dword:value

A value of 1 indicates that the user has accepted the license agreement. A value of 0 indicates that the user has not accepted the license agreement.

WMPNSSFirewallPortsOpen Registry Entry

Windows Media Player uses the following registry entry to indicate whether the user has chosen to share his or her media library with other computers on a home network.

[HKEY_LOCAL_MACHINE\Software\Microsoft\MediaPlayer\Preferences]
"WMPNSSFirewallPortsOpen" = dword:value

A value of 1 indicates that the user has chosen to share the library. A value of 0 indicates that the user has chosen not to share the library.

Ports Related to Media Library Sharing

On Windows Vista, if the WMPNSSFirewallPortsOpen registry entry has a value of 1, the following ports should be open.

Port Protocol Process Direction
554 TCP RTSP wmpnetwk.exe inbound and outbound
8554 - 8558 TCP RTSP wmpnetwk.exe inbound and outbound
5004, 5005 UDP RTCP/RTP wmpnetwk.exe inbound and outbound
50004 - 50013 UDP RTCP/RTP wmpnetwk.exe inbound and outbound
1900 UDP SSDP SSDPsrv in svchost.exe inbound and outbound
2869 TCP SSDP, UPnP SSDPsrv/UPnPHost in svchost.exe inbound
10280 - 10284 UDP WMDRM-ND registration wmpnetwk.exe inbound and outbound
10243 TCP HTTP wmpnetwk.exe inbound
2177 TCP UDP qWAVE svchost.exe inbound and outbound

 

On Windows Vista, if the AcceptedEULA registry entry has a value of 1, the following ports should be open.

Port Protocol Process Direction
All UDP ports UDP RTP, MSB wmplayer.exe, any subnet inbound
1900 UDP SSDP SSDPsrv/UPnPHost in svchost.exe inbound and outbound
2869 TCP SSDP, UPnP SSDPsrv, UPnPHost inbound

 

On Microsoft Windows XP, if the WMPNSSFirewallPortsOpen registry entry has a value of 1, the following ports should be open.

Port Protocol Process Direction
1900 UDP SSDP SSDPsrv in svchost.exe inbound and outbound
2869 TCP SSDP, UPnP SSDPsrv/UPnPHost in svchost.exe inbound
10280 - 10284 UDP WMDRM-ND registration wmpnetwk.exe inbound and outbound
10243 TCP HTTP wmpnetwk.exe inbound

 

Registry Settings