Turn off Microsoft Peer-to-Peer Networking Services

Supported on: At least Windows XP Professional with SP2

Registry

HKLM Software\policies\Microsoft\Peernet

Value name: Disabled

Description

This setting turns off Microsoft Peer-to-Peer Networking Services in its entirety, and will cause all dependent applications to stop working. Peer-to-Peer protocols allow for applications in the areas of RTC, collaboration, content distribution and distributed processing. If you enable this setting, peer-to-peer protocols will be turned off. If you disable this setting or do not configure it, the peer-to-peer protocols will be turned on.