Home > Guide, Tips, Windows 7 > Unable on Windows 7 to connet to shared folder via UNC path

Unable on Windows 7 to connet to shared folder via UNC path

Few days ago I have come across a really strange problem. On a Windows 7 workstation (but the same problem can occur on Windows Vista), it was impossible to connect to any shared folder via UNC path. Although the error message suggested that it was a problem linked to name resolution, in reality the workstation was perfectly able to solve the FQDN, or NetBIOS name of each server. The same problem presented itself even if I used instead of the machine name, its IP address. Very strange …

Error Message

Error Message 0x800704CF

After a quick search on google I finally found a solution to the strange problem, reading the various posts in the Microsoft forum. The problem seems related to the presence of an abnormal number of network devices (such network devices there are not on my laptop with Windows 7). Opening the Device Manager and highlight the hidden devices (open View and then select Show Hidden Device), appeared about two hundred network cards calls Microsoft Device 6to4:

Microsoft Device 6to4

Microsoft Device 6to4

To solve the strange problem was simply delete all the network adapters called Microsoft Device 6to4. If you do not want to risk the carpal tunnel, I suggest you to use the Microsoft program called devcon.exe, that allows to run on Windows 2000/XP/Vista/7 the operations that usually take place with the Device Manager from the command line. For example, to delete all network adapters called Microsoft Device 6to4 you could use the command : devcon remove *6to4MP*

Instead to see all devices on your system, just use the command: devcon status *

Devcon.exe command does not work very well on workstations with Windows Vista/7  64bits. In these cases, it is not rare remove all network adapters Microsoft Device 6to4 by hand!

Categories: Guide, Tips, Windows 7 Tags: , , ,
  1. Jules
    15/07/2010 at 13:30

    Wowee! That worked for me after weeks of trying to solve (I downloaded DEVCON and installed ok on W7)

    Thanks a million

  2. Athan
    04/10/2010 at 13:13

    Thank you !!! Solved a problem …

  3. 25/01/2011 at 03:37

    `.* I am very thankful to this topic because it really gives useful information *-“

  4. ChuKy
    08/03/2011 at 17:56


    Great Solution worked for my unc problem to. i had the problem with the 64bit machine, but have done it with the 3rd part software “device remover” (freeware for private). Thanks a lot 🙂

  5. gunner
    12/10/2011 at 20:30

    Awesome, I had this issue for several machines and luckily some only had 6 entries. Others had over 100! Great work.

  6. 02/12/2011 at 09:32

    Mmm, I believe you could be proper in what you’ve said.

  7. 05/01/2012 at 08:23

    Good write-up, I’m normal visitor of one’s site, maintain up the nice operate, and It’s going to be a regular visitor for a long time.

  8. 11/05/2012 at 05:46

    I have seen many time UNC path issues are better resolved by “net use” command in windows.

    Below article has a good insight on that.


    • 13/02/2013 at 22:57

      Yep but this is regarding clicking a link with file:\\ as the UNC path (for eg in a SharePoint site) or some other site/document without the user needing a mapped drive.

      • 14/02/2013 at 22:51

        so far, I have encountered this problem only rarely, but in all cases, referred to problems of access to shared folders and no access to sites or documents, such as SharePoint.

  9. 20/06/2012 at 08:54

    Good I found the Results and Error Removed.

  10. 21/06/2013 at 03:18

    Heya just wanted to give you a quick heads up and let you know a few of the images aren’t loading properly. I’m not sure why but I
    think its a linking issue. I’ve tried it in two different browsers and both show the same results.

  11. 25/06/2013 at 10:07

    Greetings! This is my first visit to your blog! We are a group of volunteers and starting a new project in
    a community in the same niche. Your blog provided us valuable information to work on.
    You have done a marvellous job!

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