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VPN Juniper Networks Connect 7.3.1 dont work on Windows 8.1

    Question

  • Hi

    In our corporate, we are using Juniper Network Connect 7.3.1 for our VPN connections. It is not working under Windows 8.1 Preview. The error is nc.app.windows 23712 (see Picture 1). I have tried to install reboot and install again same error. In device manager I see that the virtual adapter have a warning. I have tried to uninstall the adapter without any success.

    This is a really showstopper for me any ideas?

    Picture 1

    Best Regards

    Thomas Z


    Thomas Z


    • Edited by Thomas Z Thursday, June 27, 2013 7:53 PM
    Thursday, June 27, 2013 7:52 PM

Answers

  • I experienced the same issue after I upgraded my 8.0 to the 8.1 Pro Preview.  I'm using Juniper 6.5.0.

    I resolved it by:

    1)  Delete the "phantom" Juniper Network Connect Virtual Adapter

    2)  Uninstall Juniper

    3)  Reinstall Juniper

    I had considerable difficulty removing the driver.  I could not uninstall it directly from Device Manager, such that I would run the uninstall but the driver remained.   I went in to the registry but was unable to delete the folder due to lack of permissions, even though I was the owner of said folder.  So, I removed all the values, which was enough to make it appear uninstalled.

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ROOT\DSNCADPT\0001

    More Detail

    After the first attempt at reinstallation post-registry change above, it created a "Juniper Network Connect Virtual Adapter #4" driver entry in device manager.

    I then was able to delete that directly from Device Manager then did the Juniper reinstall and it worked right away.

    I should also mention that the virtual driver is no longer present in Device Manager, so my theory is that the 8.1 upgrade misinterpreted Juniper to need a device driver so created a device driver that was causing the issue.  My Win 8.0 laptop also does not have the driver so it really wasn't ever needed.

    Let me know if I can provide more detail.

    Clark Bohs


    Clark Bohs

    • Marked as answer by Thomas Z Monday, July 01, 2013 8:15 AM
    Saturday, June 29, 2013 1:43 AM
  • I fixed another one of my upgraded machines and was able to reduce the list of steps.  This is for Network Connect 6.5.0, but may be relevant to later versions:

    1. Uninstall the Juniper app from Progs and Features, in my case just the “Juniper Networks Network Connect 6.5.0” app.
    2. Delete c:\windows\system32\drivers\dsNcAdpt.sys file
    3. Reboot
    4. Launch IE (which is IE11)
    5. Add your login URL to compatibility view in IE (alt, tools, compatibility view settings)
    6. Launch your URL
    7. Accept all install prompts assuming it auto-installs if not present.
    8. Should now work!


    Clark Bohs

    • Proposed as answer by ShamanNL Wednesday, July 10, 2013 10:51 AM
    • Marked as answer by Niki HanModerator Friday, July 26, 2013 7:21 AM
    Sunday, June 30, 2013 1:24 AM

All replies

  • Same problem for me, any solution?
    Friday, June 28, 2013 12:41 AM
  • Same problem also.

    Hopefully 3 votes and people having the same issue will get this problem on the radar.

    No VPN is a bit of a productivity problem for Win 8.1.

    Friday, June 28, 2013 3:17 AM
  • I am experiencing the same issue.

    Windows device manager reports the following for the Juniper Network Connect Virtual Adapter:

    This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)

    An object ID was not found in the file.
    Friday, June 28, 2013 11:37 PM
  • I experienced the same issue after I upgraded my 8.0 to the 8.1 Pro Preview.  I'm using Juniper 6.5.0.

    I resolved it by:

    1)  Delete the "phantom" Juniper Network Connect Virtual Adapter

    2)  Uninstall Juniper

    3)  Reinstall Juniper

    I had considerable difficulty removing the driver.  I could not uninstall it directly from Device Manager, such that I would run the uninstall but the driver remained.   I went in to the registry but was unable to delete the folder due to lack of permissions, even though I was the owner of said folder.  So, I removed all the values, which was enough to make it appear uninstalled.

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\ROOT\DSNCADPT\0001

    More Detail

    After the first attempt at reinstallation post-registry change above, it created a "Juniper Network Connect Virtual Adapter #4" driver entry in device manager.

    I then was able to delete that directly from Device Manager then did the Juniper reinstall and it worked right away.

    I should also mention that the virtual driver is no longer present in Device Manager, so my theory is that the 8.1 upgrade misinterpreted Juniper to need a device driver so created a device driver that was causing the issue.  My Win 8.0 laptop also does not have the driver so it really wasn't ever needed.

    Let me know if I can provide more detail.

    Clark Bohs


    Clark Bohs

    • Marked as answer by Thomas Z Monday, July 01, 2013 8:15 AM
    Saturday, June 29, 2013 1:43 AM
  • Awesome! I had this issue yesterday! thanks for figuring this out!

    Brian

    Saturday, June 29, 2013 4:15 AM
  • I fixed another one of my upgraded machines and was able to reduce the list of steps.  This is for Network Connect 6.5.0, but may be relevant to later versions:

    1. Uninstall the Juniper app from Progs and Features, in my case just the “Juniper Networks Network Connect 6.5.0” app.
    2. Delete c:\windows\system32\drivers\dsNcAdpt.sys file
    3. Reboot
    4. Launch IE (which is IE11)
    5. Add your login URL to compatibility view in IE (alt, tools, compatibility view settings)
    6. Launch your URL
    7. Accept all install prompts assuming it auto-installs if not present.
    8. Should now work!


    Clark Bohs

    • Proposed as answer by ShamanNL Wednesday, July 10, 2013 10:51 AM
    • Marked as answer by Niki HanModerator Friday, July 26, 2013 7:21 AM
    Sunday, June 30, 2013 1:24 AM
  • I uninstalled all Juniper Apps from Prog and Features.

    Then I didn't find the "c:\windows\system32\drivers\dsNcAdpt.sys file"

    I rebooted, lauched ie 11.

    Added my login URL to compatibility view.

    Reinstalled Juniper networks.... AND

    Now I get an error that says "Fatal Application Exit": dsTermServ.exe has exited unexpectedl. Debug Information has been created in "... insert juniper roaming service location here\dsTermServ.dmp"

    Debug information pretty much says: "The thread tried to read from or write to a virtual address for which it does not have the appropriate access."

    I tried looking for that "Juniper Network Connect Virtual Adapter" and found nothing...

    Anyone else have a similar issue?

    Monday, July 01, 2013 5:28 AM
  • Thanks Clark your solution worked for me.

    /Thomas Z


    Thomas Z

    Monday, July 01, 2013 8:15 AM
  • Same issue as jtmcduffie
    • Edited by BarryNorcutt1 Tuesday, July 02, 2013 9:16 PM add name
    Tuesday, July 02, 2013 8:53 PM
  • Like Clark I could not delete the entire folder '0001', but when I tried to delete it, some of the sub-folders were removed.

    I could not remove any of the values either. After the first re-install attempt, I was able to uninstall "phantom" Juniper Network Connect Virtual Adapter.

    After this I uninstalled Juniper (and all related applications) & re-installed.

    This resolved my issue.

    Tuesday, July 02, 2013 9:15 PM
  • I had issues getting the re-install to work, no matter what happened it would not re-install Network Connect. JuniperSetupClient.exe just sat in task manager doing nothing.

    I ripped out the network adapter and driver file as per this thread, but nothing.

    In the end I followed the advice from here: http://superuser.com/questions/433321/where-to-download-juniper-network-connect-7

    To get a copy of the x64 Network Connect installer and installed that. I then put in my Companies VPN Login URL, pressed "GO" and signed in. Now connected again.


    • Edited by Dave Shaw Wednesday, July 03, 2013 11:01 PM More info
    Wednesday, July 03, 2013 11:00 PM
  • Hi Clark,

    Thanks for your first and second solution. I can confirm it worked with Juniper Network Connect 7.0.0.1.  Your second solution, installing using compatibility view was the way to do it. Great! :)

    Wednesday, July 10, 2013 10:54 AM
  • Clark: 

    After I did all the steps from 1 to 7, and it shows "The Network Connect session terminated.  Do you want to reconnect? (nc.windows.ap.23712)"

    Do you know what I did wrong. 

    Thanks.

    Tuesday, July 16, 2013 5:33 AM
  • Hi, I have the same issue. We are using juniper networks 7.5. Nothing has worked so far. I do not have a Virtual Adapter for Juniper anywhere. IE keeps saying I am putting in the wrong password when Chrome works fine. In Chrome, I get into a session but then I cant connect to my PC. The window just closes on me.
    Thursday, July 18, 2013 3:17 AM
  • Firefox works right up to the end then the terminates unexpectedly message comes up

    Sunday, July 28, 2013 8:58 AM
  • I cant get it to work in IE11, Chrome or Firefox. Tried setting it as compatibility views in ie11 as the post above and reinstalling Juniper components. The only odd thing compared to above is I have no "c:\windows\system32\drivers\dsNcAdpt.sys" file.

    Each time I launch my remote desktop session juniper loads the terminal window up but immediately I see the message "Juniper Terminal Services Client has stopped working".

    Any ideas? Can I find and run that pop up in compatibility etc do you think?

    • Proposed as answer by I.E's Finest Wednesday, July 31, 2013 11:18 AM
    Wednesday, July 31, 2013 10:15 AM
  • You do not need to do the registry edit just disable before delete

    1) disable and then delete the "phantom" Juniper Network Connect Virtual Adapter

    2)  Uninstall Juniper

    3)  Reinstall Juniper

    • Proposed as answer by jamie hardy Tuesday, August 06, 2013 8:11 AM
    Tuesday, August 06, 2013 8:10 AM
  • I could not use the existing on my 8.1 preview, so I uninstalled Juniper client in order to re-install. Tried to re-install without success multiple times.

    Upgraded to 8.1 RTM today. When I tried to re-install I found that I had to uncheck "Enable enhanced protected mode*) in Internet Explorer - Tools - Internet Options - Advanced (under "Security". After that, installation of 7.4.0  was like a walk in the park. Tested - WORKS!

    Monday, September 09, 2013 6:28 PM
  • I uninstalled all Juniper Apps from Prog and Features.

    Then I didn't find the "c:\windows\system32\drivers\dsNcAdpt.sys file"

    I rebooted, lauched ie 11.

    Added my login URL to compatibility view.

    Reinstalled Juniper networks.... AND

    Now I get an error that says "Fatal Application Exit": dsTermServ.exe has exited unexpectedl. Debug Information has been created in "... insert juniper roaming service location here\dsTermServ.dmp"

    Debug information pretty much says: "The thread tried to read from or write to a virtual address for which it does not have the appropriate access."

    I tried looking for that "Juniper Network Connect Virtual Adapter" and found nothing...

    Anyone else have a similar issue?

    Did you figure the dstermserv.exe crash out? I have the same issue on Windows 8.1 RTM and my office VPN :( Thanks
    Thursday, September 19, 2013 5:52 AM
  • I also have the dstermserv.exe crash. Doesn't work in IE11 or Chrome. Would love to get a solution. Thanks in advance.

    Friday, September 27, 2013 2:26 AM
  • I have the same problem. It worked fine under 8.0 Pro, but under RTM 8.1 Enterprise I get a failure upon launch of the TS client.

    Bill Curtis, PMP, MCITP

    Wednesday, October 02, 2013 3:45 PM
  • I see the message "Juniper Terminal Services Client has stopped working". Any solution ?
    Friday, October 04, 2013 3:28 PM