Peer Name Resolution Protocol (PNRPsvc) Service Defaults in Windows 7

Enables serverless peer name resolution over the Internet using the Peer Name Resolution Protocol (PNRP). If disabled, some peer-to-peer and collaborative applications, such as Remote Assistance, may not function.

Default Settings

Startup type:Manual
Display name:Peer Name Resolution Protocol
Service name:PNRPsvc
Service type:share
Error control:normal
Object:NT AUTHORITY\LocalService
Path:%SystemRoot%\System32\svchost.exe -k LocalServicePeerNet
File:%SystemRoot%\system32\pnrpsvc.dll
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PNRPsvc
Privileges:
  • SeChangeNotifyPrivilege
  • SeCreateGlobalPrivilege
  • SeImpersonatePrivilege

Default Behavior

Peer Name Resolution Protocol is a Win32 service. In Windows 7 it won't be started if the user doesn't start it. When the Peer Name Resolution Protocol service is started, it is running as NT AUTHORITY\LocalService in a shared process of svchost.exe. Other system components, such as drivers and services, may run in the same process. If Peer Name Resolution Protocol fails to start, Windows 7 attempts to write the failure details into Event Log. Then Windows 7 startup should proceed and the user should be notified that the PNRPsvc service is not running because of the error.

Dependencies

Peer Name Resolution Protocol is unable to start, if the Peer Networking Identity Manager service is stopped or disabled.

If Peer Name Resolution Protocol is stopped, the following services cannot start:

Restore Default Startup Configuration for Peer Name Resolution Protocol

Before you begin doing this, make sure that all the services on which Peer Name Resolution Protocol depends are configured by default and function properly. See the list of dependencies above.

1. Run the Command Prompt as an administrator.

2. Copy the command below, paste it into the command window and press ENTER:

sc config PNRPsvc start= demand

3. Close the command window and restart the computer.

The PNRPsvc service is using the pnrpsvc.dll file that is located in the %WinDir%\system32 folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.