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Windows 7 on a domain Connecting to XP off domain

Posted on 2015-01-14
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Last Modified: 2015-01-23
I have computers that are part of a domain that need to connect to  share that is on a Windows XP computer that runs a manufacturing machine. The goal is to have engineers copy files into the share so the operator of the machine can run the files.

I have the XP Service Pack 2 computer setup with the share and the share is working correctly if connected to by another XP or Server 2003 box where I can put the Administrator username and password in and access the share without an issue. THe XP computer is part of the manufacturing machine so adding it to the domain is probably not an option.  

The problem is with Windows 7 Pro computers where the credentials require a domain\username and password. I have tried the Computername\username and password and it will not work on WIndows 7/Windows 8.1 machines.

Is there sometype of setting to lower the connection requirements in WIndows 7 so that it can connect to this share?

I have read about WOrkgroups and Home Sharing, etc but that is not feasible becuse the main computers are part of a Domain.
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Question by:INCITE-TM
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by:NVIT
ID: 40549661
...tried the Computername\username and password and it will not work on WIndows 7
Computername: Do you mean local computer name?

Have you tried adding the XP station to the Windows 7 Control Panel\User Accounts\Credential Manager?
1. Add a Windows credential
2. Address: Put XP computer name here
3. User name: Put name that can access share here
4. Password: Put password
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by:helpfinder
ID: 40549685
and wghat username/oassword are you typing when accessing the share?
because I would expect it should wotk like this:
1 XP machine not a part of domain but in the same LAN with shared folder (lets think share name is Data)
2 windows 7 computer part of domain in the same LAN as XP machine is trying to access share on XP machine using \\IP or \\hostname (IP or hostanem of XP machine)
3 windows 7 user is asked for credentials (pop up window) and put credentials of XP user (!) so if the hostname of XP machine is PC01 and user administrator has password 12345 the credentials will be PC01\administrator and password 12345
It should work like this
also check permission for shared folder but in this example is administrator (of XP) accessing the folder and admin should have access by default
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by:dlb6597
ID: 40549695
you could try the ip address instead of the computer name...both in the sharename to connect to and the credentials....you didn't mention if the xp workstation was in your domain DNS, or if resolution was occuring via broadcast, etc.

\\192.168.1.1\sharename
credentials would be 192.168.1.1\username
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Author Comment

by:INCITE-TM
ID: 40550158
I have tried both LocalComputer\Username and 192.168.X.X\Username without success. I have also checked credential manager and removed and readded credentials to that but still not working.

just to clarify details.

Comp1 is Windows XP in a workgroup with the default name being workgroup.  I have a folder named Programs and it is shared out as Programs. Share security is Everyone Full Access. This computer is not showing a tab for NTFS security settings.
Comp2 is Windows 7 in a domain. (domain.local)
Both Computers are in the same subnet and can see each other by pinging, or through Explorer and Network in Windows.
When Comp2 tries to connect to \\Comp1\Programs, the normal login credentials box pops up.
I try entering Comp1\Username and password but the box continually pops up and I never get access to the share.

As a test, I go to a different Windows XP or Server 2003 box, I go through the same process above and the credentials box pops up, I enter the username and password without the remote computer name or IP address in the username, and the XP/2003 boxes connect to the share without any problems.

So Comp1(the XP box with the share) doesnt like the credentials that Windows 7 uses when entering the Comp1 name before the username.

Is there a way to lower the security settings when the credentials are being sent to the XP box?
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by:NVIT
ID: 40550275
Maybe "offline files"? If on, try turn off.
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INCITE-TM earned 0 total points
ID: 40550302
I think I found a possible solutions and think it has to do with loosening NTLM authentication so the Windows 7 will use LM and NTLMv1 as well as NTLMv2.

Add a registry entry on the WIndow 7 computer to

a DWORD called LmCompatibilityLevel to HKLM\SYSTEM\CurrentControlSet\Control\Lsa and set it to a value=1.

I am not onsite at this point, but connected to the network through a VPN and accessed the share both by IP and by UNC path.  I will be testing this further in the morning and will see if this resolves the problem for the engineering computers that need it.
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by:NVIT
ID: 40550306
Awesome. Thanks for the update., INCITE-TM...
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Author Closing Comment

by:INCITE-TM
ID: 40566010
Found this solution from other forums.
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