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Thursday, 20 November 2014

HOW TO FIX: Sound not working in Windows 8 - 'Error 0x800706cc: The Endpoint is a duplicate'

There have been many reports on the Internet recently of a problem affecting sound playback in Windows 8/8.1 caused by the accidental removal of system files by AVG anti-virus.


The symptoms include:

- Complete loss of audio
- A red cross over the speaker icon in the system tray (bottom right corner) area of the screen.
- Unresponsive navigation of the Windows Control Panel causing explorer.exe to hang.
- Inability to start the 'Windows Audio' service with the error message Error 0x800706cc: The Endpoint is a duplicate.
- Inability to start the 'Network List' service with the error message Error 127: The specified procedure could not be found.
- One or more system files in AVG quarantine (this can vary).


Many reports indicate that restoring the system files from the AVG quarantine restores normal sound and Control Panel operation. On the Toshiba laptop I was working on, there was evidence of a Printconfig.dll file having been recently 'secured' but no sign of it existed in the quarantine, so this was not an option. The file name itself seems to vary, with some accounts of the problem mentioning a 'launcher.exe' file instead.

What was strange about the problem is that the regular 'SFC' and 'DISM' tools did not recognise any missing or corrupt files, so it was very difficult to find out exactly what was missing. After a lot of Internet searching, I finally came across a post by Nathan Mixter at http://superuser.com/questions/814671/cant-enable-windows-audio-on-windows-8-1. Nathan had fixed the problem by using a a free program called 'Windows Repair', available to download from http://www.tweaking.com/content/page/windows_repair_all_in_one.html.

I was sceptical at first, but started the 'repair' section of the program running with its default options ticked and left it to process overnight. After about 8 and a half hours it finally finished, and on restarting the computer I was amazed to discover that the sound was now working again. Whatever it was doing it all that time remains a mystery, and I have no idea what file or registry key was preventing the audio service from starting. If anybody knows, I would be really interested to hear from them.

Unfortunately, the problem with the unresponsive control panel remained. After examining the event logs, I found that it was caused by a faulty 'Network List' service which would refuse to start with the message Error 127: The specified procedure could not be found. Disabling the service seemed to restore normal operation, but I wasn't sure what the consequences of leaving it disabled might have been.

After a lot of trial and error, I was able to finally repair the problem by extracting the registry key that controls the 'Network List' service from a working computer and then importing it into the computer with the problem.

Key for the 'Network List' service:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\netprofm

After a reboot, the service started without error and the Control Panel worked normally.

To fix this on your own machine, download the file 'netprofm.reg' from the following link:

https://sites.google.com/site/wintegrity01/netprofm.reg

Once downloaded, double click on the file and accept any warnings that appear. This will import a working 'Network List' registry key and it will automatically replace the faulty version. After restarting the computer, the Control Panel should be back to normal.








36 comments:

  1. Have to pay for that Window Repair man..wonder if the free version one will work? They offered the free version after i want to uninstall it

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  2. Thanks a lot, it seems your solution fixed that problem I had with windows 8.1 - maybe releasing files from AVG antivirus helped as well (Printconfig.dll had also been 'secured' on mine)
    HOW TO FIX: Sound not working in Windows 8 - 'Error 0x800706cc: The Endpoint is a duplicate'

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  3. Can someone please post a list of the files that are removed by AVG that cause the audio issues? I no longer have the files in the Secure Vault, but I can restore them from another computer if I know that names. Thanks.

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  4. what do we do if we have cleared the AVG virus vault??

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  5. This comment has been removed by the author.

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  6. Thanks Matthew for sharing your knowledge and experience on this matter. For me it was AVG Anti Virus isolating the files in the virus vault. However, and just like you, all that was showing in my Virus Vault was the printconfig.dll file.

    I decided to go ahead and restore this file back to my system. Once I clicked restore, another dialog box came up about another file, then another, and another, about 6-8 total, I paid close attention to the names of each file and realized the were all related to the Windows Audio service and Network List service.

    Once completed, I closed all windows and programs, then restarted my computer... After restart I had audio back!

    So I think you just needed to restore the printconfig.dll file to gain access to the other audio support files.

    I will report this to AVG as well.
    Thanks again!

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  7. You are a Lifesaver !! After hours of checking services, registry values, reading tech tips, and scratching all the hair off my head....I finally found this!!! I had already found the AVG info about fixing the sound but still had control panel, internet explorer metro style, user accounts errors, lockups, and general slow sluggish behavior. Running the dism and sfc each took like 12 hours. I knew it was the network list service but was finding no information on it. I compared the netprofm registry values on the bad computer to one that was working properly. In my case, it turns out that one registry value had netprofm and what is needed there is netprofmsvc. I manually made the change, rebooted at like lightning speed compared to how it had been acting and life was good again !!! You are my hero of the day. Thanks a million !!

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  8. Thank you so much! I restored the AVG file and did the download at the end and when I restarted everything worked perfectly! I wonder what caused AVG to see it as a threat.

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  9. I had already uninstalled AVG to try to fix it so I don't know if there was anything in quarantine, but the tweaking program totally fixed it! Thank goodness I found this!

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  10. Dean Chappell20 March 2015 at 17:04
    what do we do if we have cleared the AVG virus vault??

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  11. Thanks! I waited for just more than half hour for the tweaking app to finish its work to end my misery of several days hopping from one forum after another just to find a solution to this nasty no-sound problem, and it work. I think this is a bug on win 8.1 64 bit.

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  12. If you are using the tweaking app , go to repairs and UNCHECK EVERY REPAIR then check the following repairs:
    Repair Windows Updates
    Repair MSI (Windows Installer)
    Repair File Associations (12)
    Repair Print Spooler
    Restore Important Windows Services
    Set Windows Services to Default Startup

    THESE REPAIRS SHOULD FIX THE NO SOUND PROBLEM IN LESS THAN 30 MINUTES.

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    Replies
    1. thanks this worked great now I've actually got sound again and I'm doing all the repairs except the ones you listed above

      Delete
    2. Windows repair wants me to pay to use its repair function

      Delete
  13. This comment has been removed by the author.

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  14. hey guys help i have same problem like yours but i dont know the steps what to do first .my speaker wont work it has a red mark in my audio logo pls help tnx

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  15. Fantastic description in this blog. Its goog for me to get solution of my problem.
    Visit :- Network Repair

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  16. Nice description which is given by you in this blog. Its provide a solution related to my problen. Thank you for this blog
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  17. I don't know exactly what's going on, but I'm using Windows 10 and doing the combined auto run fixed my problem when nothing else could. Thank you a thousand times over for the quick fix.

    The problem occurred for me after installing Corsair's Utility Engine for my new Corsasir VOID Wireless headphones, in case anyone else winds up here with that problem!

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