Can't start Peer Name Resolution Protocol
I can't start the service 'Peer Name Resolution Protocol' which is required for HomeGroups. There are 3 Peer services on my machine. One is running (Peer Networking Identity Manager). The other one (Peer Networking Grouping) is not because it depends on 'Peer Name Resolution Protocol' which fails to start. Both Homegroup services are started and I have IPV6 enabled on my NIC and in my LAN properties. The event log has this: 'The Peer Name Resolution Protocol cloud did not start because the creation of the default identity failed with error code: 0x80630801.' Using the Event ID web search it leads me to this: Event ID 102 — PNRP Protocol I tried what they suggested (it's for Vista) but to no avail. Perhaps some Permission got borked. Is there a way to recreate the RSA folder and sub-folders with correct Permissions or perhaps it's some other type of problem? I do notice I have a lot of entries in "C:\ProgramData\Microsoft\Crypto\RSA\MachineKeys" Any help in getting this Service started will be appreciated.
October 14th, 2009 6:06pm

Hi, This issue can occur by corrupted PNRP service. You can perform the following steps to troubleshoot the issue. 1. Please download the correct Network Connection registry file from the link below: http://cid-6df3bca839e981ef.skydrive.live.com/self.aspx/.Public/PRNP.txt 2. There will be the PRNP.txt file. Please right click it and rename it to PRNP.reg file. 3. Double click the PRNP.reg file and click Yes to import the file. Note: To avoid unexpected situation, please back up the computer registry before importing the registry file. 4. Then, please verify the Peer Name Resolution Protocol service and other failure service again. a. Click "Start", go to run, type "services.msc" (without quotation marks) in the open box and press Enter. Note: If you are prompted for an administrator password or confirmation, type your password, or click Continue. b. Right click the "Peer Name Resolution Protocol" service and choose Properties. c. Click on the "Log On" tab, please ensure the option "Local System account" is selected and the option "Allow service to interact with desktop" is unchecked. d. Click on the "General" tab; make sure the "Startup Type" is "Automatic". Then please click the button "Stop" under "Service Status" to stop the service. e. Then please click the button "Start" under "Service Status" to start the service. f. Click OK. What's the result? If the issue persists, please also perform the suggestions from the following article. Home Group Issues Thanks, Novak
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October 15th, 2009 9:34am

Researched the problem and found the solution. A file was corrupted and deleting it got the PNRP service running. The file was recreated correctly when the PNRP service started up. Here's the file for future reference: "C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking\idstore.sst"
October 15th, 2009 9:45pm

Thank you thank you thank you! I spent countless hours researching this problem, and finally that was the issue. Thanks again.
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February 13th, 2010 11:17pm

THANK YOU SOOOO MUCH I was all over the place trying to figure out what was wrong, I deleted the file and that solved the problem
April 29th, 2010 12:45am

Hello all. Deleting the file is ok but after a while (the hole day) the machine reboots and the problem re-appears. Any one? Thank you. Telmo SáWeb Developer
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August 10th, 2010 1:52pm

Tried all the above and deleting the files a couple of times and places as suggested but nothing worked. The PNRPSvc still refuses to run. The only service in the group that starts for me is the "Peer Network Idenity Manager. Anybody got anything new here?? Does MS have a patch for this yet?? Anybody??? Harry C.
October 5th, 2010 8:09pm

Thanks sorted the problem.
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October 14th, 2010 1:59pm

thanks a ton!!
October 24th, 2010 4:17pm

There is no obvious sympton of my pc, but there are a lot of error messages in the event log. Search for it and found your fast-and-easy solution. Thanks streetwolf! :)
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March 3rd, 2011 6:20am

Worked as advertised first time. Just copy this guy's link into the search, when the file (idstore) pops up in the search, select and delete it. Then just go back and restart the service. It will create a new-uncorrupted copy. Man, you rock!
March 21st, 2011 12:17am

THANKS!!!!!!
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May 8th, 2011 9:47pm

my result is windows could not start the peer name resolution protocol service on local computer. Error 1079: the account specified for this service is different from the account specified for other services running in the same process.
May 15th, 2011 7:15pm

my result is windows could not start the peer name resolution protocol service on local computer. Error 1079: the account specified for this service is different from the account specified for other services running in the same process. Same here!
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September 17th, 2011 1:11pm

my result is windows could not start the peer name resolution protocol service on local computer. Error 1079: the account specified for this service is different from the account specified for other services running in the same process. Same here! Me too.
September 19th, 2011 11:08am

That was super!!!! nothing less. thanks a million times
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September 26th, 2011 11:43am

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