Middlebury

Vista NTLM Compatibility

This article is now deprecated - Vista supports our DFS servers out of the box

NTLM vs. NTLM 2: Vista defaults to a specific network security protocol and, by default, won't accept anything older than that. You can change this: go into the registry editor (needs admin privileges), navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa, set the DWORD variable "LmCompatibilityLevel" to value 1 (create the variable if it wasn't there), then restart the computer and you should be able to connect to our servers as you can on XP.

Here's a sample registry file that does this change automatically:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
"LmCompatibilityLevel"=dword:00000001
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