First available in the Advanced Networking Pack for Windows XP, PNRP is a distributed name resolution protocol allowing Internet hosts to publish “peer names” and the corresponding IPv6 address. Other hosts can then resolve the name, retrieve the corresponding address, and establish peer-to-peer connections. Noah Horton, Program Manager in charge of PNRP, has a lot of information on this service at his blog, and Wikipedia also has a page. In short, if you don’t use Windows Meeting or other applications or games that make use of PNRP, then there is no harm disabling this service, though it is already set to manual by default.
- Home Basic: Manual
- Home Premium: Manual
- Business: Manual
- Enterprise: Manual
- Ultimate: Manual
- Peer Networking Identity Manager
- Peer Networking Grouping
- PNRP Machine Name Publication Service

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Comments
Travis
Jan 19, 2008 at 5:21 am
All I know at this point is that it’s the Devil Incarnate when enabled on a Windows XP Professional Sp2 computer which has the latest update of Windows Live OneCare, that being Version 2.0.
This P2P service combined with Live OneCare causes the CPU to spike up to 100% and stay there, thereby rendering the computer virtually unusable until it’s brought back under control by disabling both it and the accursed “Peer Networking Identity Manager” services.
Much, much more about the subject can be found in the Live OneCare Community Forums, if anybody is interested.
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