Can’t connect to older network devices?

If you can’t connect to older network devices or computers (Samba, SNAP Servers or others) you may need to adjust your registry settings on NTLM.  You can do this by the command line.  Open a command prompt by typing CMD in the search box.  Run as the Administrator  and type the following: REG ADD “HKLM\System\CurrentControlSet\Control\Lsa” /v “LMCompatibilityLevel” /t REG_DWORD /d “1” /f  The above command is one line.

or use Regedit

You may have devices on your network that you can no longer connect (Vista/Windows 7) to or you may not be able to network to Windows XP (for whatever reason, this works).  This changes settings to accept NTLMv1 and NTLMv2 so that you can connect to Samba Servers, Snap Servers, Older Windows Computers or whatever….

1. Go to Run, Type Regedit and open this key:


2. If it doesn’t exist, create a DWORD value named


About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
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One Response to Can’t connect to older network devices?

  1. Pingback: Enable NetBIOS over TCP/IP « TCAT Shelbyville - Technical Blog

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