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Why can't I map a drive in Windows 7 to a Windows 2000 share?

By rboswell ·
I have a small network (5 PC's) with a Windows 2000 machine acting as a server with a single shared folder. The owner bought a new PC with Windows 7 Professional. All was well until I tried to map a drive to the Windows 2K share. I can see it but I can't log in. Spent about 2 hrs with Microsoft tech support (three different levels) and another hour with Dell. They couldn't do it either. Since I have no faith in either I was wondering if anyone else knows why this can't be done. Have tried this with both 32 and 64 bit systems.

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MIght be a LM security issue

by grifonchan In reply to Why can't I map a drive i ...

I encounted a similar problem when I had to connect Linux NASes to Windows 7 machines. After much headaches, it turned out it was a LM security issue: Windows 7 client use by default a higher level of LM security than Vista and previous Windows versions. As a quick fix you can lower the default security level of your seven clients by changing this registry key in regedit:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa

and setting LmCompatibilityLevel to 1 (dword)

Hope this will fix your problems as well, cheers.

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