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Windows 7 Unable to Map Windows 2000 drive

    Question

  • I have 2 computers on a home network 1 running W 2000 Pro and the other one was running Vista. While I had Vista on my newer machine it was completely ablr to map the drives on the W 2000 Pro system. I upgraded the Vista machine to W 7. Now when I go to map the W 200 Pro drives onto the W 7 machine it fails the password - even though I haven't changed the password on thew W 2000 Pro machine.

    Can you map W 2000 Pro drives on a local network to W 7? What do I need to do?
    Thanks,
    Friday, December 04, 2009 10:16 PM

All replies

  • I also am having the same problem.  I have 8 computers in my home network and I just built a new Windows 7 Pro box.  It will not browse the workgroup nor will it connect to my main computer a Windows 2000 Pro box.  I tried to mapping a drive using IP address as well DNS name.  When it goes to connect it asked for a password, I enter and it says:

    The specified network password is not correct.

    I have changed password and doule and triple checked it so the password is correct.

    Any help is greatly appreciated.

    My son has a new laptop with Windows 7 Home Premium and It mapped all drive fine

    Thanks
    Saturday, December 05, 2009 12:40 PM
  • I have various versions of Windows from 3.11, NT4, 98 2k, XP and now 7. I cannot map from 7 to NT4, I am within a domain structure, the NT 4 box is a stand alone workstation therefore I use pcname\username for the username. I continually get promted for the password with the error wrong password. I can map this drive from any other version of Windows. My guess is it has something to do with the pass-through authentication with active directory which I have with server 2k3. I have tried username@pcname, just username, none of which work. Can anyone shed any light on this problem and if there is a work around?
    Wednesday, December 09, 2009 4:10 PM
  • I think this is might be due to the fact that Vista and 7 use NTLMV2 by default. 

    http://technet.microsoft.com/en-us/library/bb727037.aspx

    The link is a technet entry about Vista networking, but I suspect the same is true for Windows 7.

    As for Pre Vista and 7 computers not showing up when you browse the network from a Vista or 7 computer:

    http://technet.microsoft.com/en-us/library/cc749119%28WS.10%29.aspx


    Again, a link about Vista.  Might be the same for 7. 

    "Network Map in Windows Vista diagrams the connections between network devices to help you troubleshoot connectivity problems. Network Map uses a discovery protocol called Link-Layer Topology Discovery (LLTD) in order to query the other devices on the network to determine how the network is organized. Computers that are running Windows Vista include the software components that implement the LLTD protocol. For network computers that are running Windows XP to appear on the map, they must have a discovery protocol enabled that can respond to the mapping computer's requests."



    Bits of Fury
    Friday, December 11, 2009 4:34 PM
  • When I was running Vista the W2000 drives mapped fine - it wasn't until I "upgraded" to W7 that I was unable to map the W2000 drives....
    Monday, December 14, 2009 11:28 PM
  • on your win 7 machine, run regedit and go to
    HKLM\SYSTEM\CurrentControlSet\Control\Lsa
    set the value to 1

    read http://technet.microsoft.com/en-us/library/cc960646.aspx
    Thursday, December 24, 2009 8:49 AM
  • I hate to sound too stupid but where in the Lsa are do you make this change and change it to what decimal?
    Monday, March 29, 2010 10:57 PM
  • Needs to be a DWORD named LmCompatibilityLevel set to value of 1(one) at
    HKLM\SYSTEM\CurrentControlSet\Control\Lsa

    And here's the background on that.

    http://technet.microsoft.com/en-us/library/cc960646.aspx

    http://technet.microsoft.com/en-us/magazine/2006.08.securitywatch.aspx

     

     


    Regards, Dave Patrick .... Microsoft Certified Professional -Microsoft MVP [Windows]
    Monday, March 29, 2010 11:08 PM
  • Choice! That worked like a charm. Many thanks.
    Tuesday, April 27, 2010 4:36 AM
  • please read below for a previous response. I think this is might be due to the fact that Vista and 7 use NTLMV2 by default. http://technet.microsoft.com/en-us/library/bb727037.aspx The link is a technet entry about Vista networking, but I suspect the same is true for Windows 7. As for Pre Vista and 7 computers not showing up when you browse the network from a Vista or 7 computer: http://technet.microsoft.com/en-us/library/cc749119%28WS.10%29.aspx Again, a link about Vista. Might be the same for 7.
    Tuesday, April 27, 2010 5:09 PM
  • Yes, it is about NTLMv2 See the links I posted about setting LmCompatibilityLevel for details.

     


    Regards, Dave Patrick .... Microsoft Certified Professional -Microsoft MVP [Windows]
    Wednesday, April 28, 2010 3:33 AM
  • Needs to be a DWORD named LmCompatibilityLevel set to value of 1(one) at
    HKLM\SYSTEM\CurrentControlSet\Control\Lsa

    And here's the background on that.

    http://technet.microsoft.com/en-us/library/cc960646.aspx

    http://technet.microsoft.com/en-us/magazine/2006.08.securitywatch.aspx

     

     


    Regards, Dave Patrick .... Microsoft Certified Professional -Microsoft MVP [Windows]

    Thanks a bunch...solved my problem - Win 2000/Win 7 network issues.
    Tuesday, June 29, 2010 2:52 AM
  • This seemed almost too good to be true, a simple registry edit...

    Looking in HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Lsa...there is no entry for LmCompatibilityLevel nor can I find the entry searching the whole registry.

     

    Could this be beacuse I am running Win7 64bit?

    Sunday, October 10, 2010 7:58 PM
  • If it doesn't exist you may need to ADD it.

    http://support.microsoft.com/kb/147706

     

     

     


    Regards, Dave Patrick .... Microsoft Certified Professional -Microsoft MVP [Windows]
    Sunday, October 10, 2010 10:31 PM
  • Thanks for the suggestion and reference Dave. I have added LmCompatibilityLevel  to ..../CurrentControlSet/Control/Lsa ...at least a dozen times today (under admin login). But every time I reboot the system the line disappears. Weird.

    I get the pwd request issue mentioned at the start of the thread.

     

    Monday, October 11, 2010 9:52 PM
  • Thanks mate that worked for me!

     

    regards

    Maarten Smits

    Monday, November 08, 2010 9:08 AM
  • This seemed almost too good to be true, a simple registry edit...

    Looking in HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/Lsa...there is no entry for LmCompatibilityLevel nor can I find the entry searching the whole registry.

     

    Could this be beacuse I am running Win7 64bit?

    I was win 7 64 bit and this worked for me:
    http://ykyuen.wordpress.com/2009/09/04/windows-7-cannot-connect-to-newtork-drive/

     

    Thursday, May 12, 2011 9:40 PM