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 3:17pm

Thank you thank you thank you! I spent countless hours researching this problem, and finally that was the issue. Thanks again.
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
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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
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.
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October 5th, 2010 8:09pm

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

thanks a ton!!
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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! :)
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!
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March 21st, 2011 12:17am

THANKS!!!!!!
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.
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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!
September 17th, 2011 1:03pm

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 8:03pm

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 11:05am

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.
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September 19th, 2011 6:05pm

That was super!!!! nothing less. thanks a million times
September 26th, 2011 6:40pm

Remember to download and install the reg file in the first post !! That did the trick for me :-)
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October 18th, 2011 3:00pm

Remember to download and install the reg file in the first post !! That did the trick for me :-)
October 18th, 2011 3:00pm

I have the same problem now. I've deleted below files from my computer. Then restart my computer. "C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking\idstore.sst" But, Peer Name Resolution Protocol can't start showing error 0x806320a1. Is somebody have the experience to solve this situation? Thanks in advance.
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November 10th, 2011 3:02am

I have tried everything and nothing is working. I cannot locate the files in the c drive. what else can I do?
November 10th, 2011 1:48pm

Followed Novak Wu and Streetwolf suggestions, but no joy. Rebooted PC etc. Went back to the three services related to Peer Networking opened properties and went to the logon tab, clicked the Logon on as This account (second radio button), browse and select ADVANCED / Find, select "Local Service", OK, blank out the dots against the password and password confirm, click apply. Do the Peer Networking Identity Manager first, you have to stop and restart the service for it to take effect, then repeat the logon process for the other two services. Set all three to automatic. Hope it works for you.
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November 16th, 2011 4:50pm

Followed Novak Wu and Streetwolf suggestions, but no joy. Rebooted PC etc. Went back to the three services related to Peer Networking opened properties and went to the logon tab, clicked the Logon on as This account (second radio button), browse and select ADVANCED / Find, select "Local Service", OK, blank out the dots against the password and password confirm, click apply. Do the Peer Networking Identity Manager first, you have to stop and restart the service for it to take effect, then repeat the logon process for the other two services. Set all three to automatic. Hope it works for you. Yes, it does. Thanks. Question remains what have I done here? Have I compromised the security on my machine or is it supposed to be this way to begin with? In any case, It works and that's all that matters, for now. Thanks a million.
December 9th, 2011 1:08am

THIS WAS AN IMMEDIATE AND ELEGANT FIX FOR ME TOO. THANKS FOR THE POST.
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December 30th, 2011 4:00pm

Ok, deleting the "C:\Windows\ServiceProfiles\LocalService\AppData\Roaming\PeerNetworking\idstore.sst" file worked to get me past error 1068, but then I was getting error 1079. To fix the 1079 error, go back into the Peer Name Resolution Protocol service properties, select 'Log On' and then select 'This account' then use 'Local Service'. Your computer's administrator account password is the password for Local Service. I finally have HomeGroup again after months of troubleshooting. Thanks!
January 24th, 2012 9:47pm

Thank you fixed my issue!
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February 1st, 2012 11:59pm

Man, thnk you. Exactly as it is.
March 15th, 2012 6:48am

Thanks!!! that worked great!
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April 1st, 2012 9:22pm

This worked for me. Thanks for adding it!
April 22nd, 2012 3:49pm

thank you!
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May 13th, 2012 2:41pm

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