| URL used | URL function |
| https://Login.live.com
(https://Login.live.com)
| HTTP 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 |
| http://Login.live.com
(http://Login.live.com)
| HTTP authentication to Windows Live ID |
| https://*.contacts.msn.com
(https://*.contacts.msn.com)
| To get the contact list |
| https://*.storage.msn.com
(https://*.storage.msn.com)
| Storage 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.com
(http://*.storage.msn.com)
| Storage of the user tile (HTTP DAV) and acquiring pictures from a user's Windows Live Space |
| http://c.msn.com
(http://c.msn.com)
| To set an anonymous unique ID for a user to personalize the Windows Live experience |
| http://*.messenger.msn.com
(http://*.messenger.msn.com)
| Various core messenger operations |
| http://g.msn.com
(http://g.msn.com)
| Redirect URLs used for tracking the start of a URL for a particular page to Microsoft Web sites |
| http://crl.microsoft.com
(http://crl.microsoft.com)
| To access the latest Certificate Revocation List (CRL) in order to check the validity of a certificate |
| http://messenger.hotmail.com:1863
(http://messenger.hotmail.com:1863)
| Communications channel for messenger server; Microsoft Notification Protocol (MSNP) for messaging |
| http://gateway.messenger.hotmail.com
(http://gateway.messenger.hotmail.com)
| In case a firewall is blocking the ports, Messenger can use this gateway over HTTP |
| http://config.messenger.msn.com
(http://config.messenger.msn.com)
| Download configuration information that is used by the Messenger client |
| https://ows.messenger.msn.com
(https://ows.messenger.msn.com)
| Send offline messages |
| https://rsi.hotmail.com
(https://rsi.hotmail.com)
| Receive offline messages |
| http://sqm.microsoft.com
(http://sqm.microsoft.com)
| Upload Service Quality Monitoring (SQM) data to Microsoft; (no personally identifiable information [PII] is transferred) |
| http://*.edge.messenger.live.com
(http://*.edge.messenger.live.com)
| Various 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 |
| http://relay.data.edge.messenger.live.com
(http://relay.data.edge.messenger.live.com)
| Media relay used to transfer binary data (files, voice, or video) |
| http://rad.msn.com
(http://rad.msn.com)
| To 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.com
(http://appdirectory.messenger.msn.com)
| Used by Messenger activities/games applications that run inside Messenger applications |
| https://images.messenger.msn.com
(https://images.messenger.msn.com)
| For messenger image files |
| http://spaces.live.com
(http://spaces.live.com)
| For the contact card |
| http://relay.voice.messenger.msn.com
(http://relay.voice.messenger.msn.com)
| Media relay used for voice |
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