Network ports and URLs that are used by Windows Live Messenger


This article describes the various network ports that are required for Windows Live Messenger features to work. It also lists the URLs that Messenger uses.

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More Information

The following table lists the network ports that are required for various features of Windows Live Messenger 8.1 on a Windows Vista-based computer.

FeaturePort that is used
Sign in to the Messenger serviceTCP 80, 443, 1863
Network DetectionTCP 7001

UDP 9, 7001
TCP 80, 443, 1863

TCP/UDP 30000 - 65535
Audio (Legacy) *UDP 5004 – 65535
Webcam and Video ConversationsTCP 80

TCP/UDP 5000 - 65535
File TransferTCP 443, 1863

TCP/UDP 1025 - 65535
File Transfer (Legacy) *TCP 6891 - 6900
Sharing FoldersTCP 1863
TCP/UDP 1025 – 65535
Whiteboard and Application SharingTCP 1503
Remote AssistanceTCP 3389

TCP/UDP 49152 – 65535
Windows Live CallTCP 443, 5061

UDP 5004 - 65525
GamesTCP 80, 443, 1863

TCP/UDP 1025 - 65535

* These ports are used when you are connected to a contact through a legacy client program, such as MSN Messenger 5.0 or any version of Windows Messenger.


The following table lists the URLs to which Windows Live Messenger connects.

URL usedURL function over SSL (HTTPS) authentication to Windows Live ID and acquiring of x509 certificates for secure peer-to-peer (p2p) connections for the Sharing Folders feature authentication to Windows Live ID
https://*.contacts.msn.comTo get the contact list
https://*.storage.msn.comStorage of the user tile, personal status message, and display name for a user so that the user can have the same set of information across all Windows Live experiences on work and home computers; (Simple Object Access Protocol [SOAP] over HTTPS)
http://*.storage.msn.comStorage of the user tile (HTTP DAV) and acquiring pictures from a user's Windows Live Space
http://c.msn.comTo set an anonymous unique ID for a user to personalize the Windows Live experience
http://*.messenger.msn.comVarious core messenger operations
http://g.msn.comRedirect URLs used for tracking the start of a URL for a particular page to Microsoft Web sites access the latest Certificate Revocation List (CRL) in order to check the validity of a certificate channel for messenger server; Microsoft Notification Protocol (MSNP) for messaging case a firewall is blocking the ports, Messenger can use this gateway over HTTP
http://config.messenger.msn.comDownload configuration information that is used by the Messenger client
https://ows.messenger.msn.comSend offline messages offline messages Service Quality Monitoring (SQM) data to Microsoft; (no personally identifiable information [PII] is transferred)
http://* core Messenger operations. For example, echo servers that are used to establish direct connectivity between two messenger clients for peer-to-peer (p2p) communication when clients are behind firewalls relay used to transfer binary data (files, voice, or video)
http://rad.msn.comTo download advertising content display in the client and to download ad-sponsored personal expression content, such as display pictures, and emoticons
http://appdirectory.messenger.msn.comUsed by Messenger activities/games applications that run inside Messenger applications
https://images.messenger.msn.comFor messenger image files the contact card
http://relay.voice.messenger.msn.comMedia relay used for voice

NoteUsers behind some authenticating proxy servers may experience sign-in issues. They might have to configure the proxy servers to force authentication for the following User Agent string: MSN Explorer/9.0 (MSN 8.0; TmstmpExt). To do this, users should see the documentation for their proxy server or contact their network administrator.

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ID do Artigo: 927847 - Última Revisão: 26/08/2009 - Revisão: 1