Vista Business laptop loses mapped network drive and locks out user account on NT 4.0 Server PDC

OK, my network still uses a Windows NT 4.0 Server PDC.  I have user running a laptop with Vista Business and here is what is happening:

* I have a mapped drive on the network
* When Vista user signs in, the map drive is unavailable

Upon closer inspection, the user's account on the PDC shows up as being locked out.

The passwords on both the laptop and the PDC match so I'm not sure what's up.

Only workaround right now is to manually map the drive using the Administrator ID and password.

Any help?  Is Vista OK with NT 4.0 Server PDC machines?

Thanks!
jimsharkyAsked:
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SysExpertCommented:
You may need to see if there is an option to allow it to do NTLM logins instead of Kereboro.

It may be in the policies or a reg change.

did you check for info on the MS site ?

I checked www.jsifaq.com and could not find anything.

see

http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=814907&SiteID=17

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jimsharkyAuthor Commented:
that seems to have done it (specifically, the instructions contained in the technet link).

vista machine name was already in server manager on the Nt4 domain.

just had to run secpol.msc on the Vista laptop and change the 2 policy settings.

THANKS!
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