Problem with computers trying to automatically logon

Have rejoined 6 windows xp computers to an SBS 2008 domain using the http://connect wizard.  now every time the machine boots or reboots or a user logs out and goes to the logon screen, it tries to log on again but cant.  It says the user account is not found or incorrect password.  every time the machine tries to log on it uses the domain admin's username and local machine for 'log on to'.  this affects about 4 computers.  i tried dis-joining and rejoining one computer but still have problem.  
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LuxtechAsked:
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MarkieSCommented:
You need to look at the registry AutoLogon

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

Wesite link
http://support.microsoft.com/kb/315231
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MarkieSCommented:
This will also hold the old values to login with... so change them to what you need

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"DefaultUserName"=
"cachedlogonscount"=
"DefaultDomainName"=
"CachePrimaryDomain"=
"AltDefaultDomainName"=
"AltDefaultUserName"=
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LuxtechAuthor Commented:
I dont want the machines to log in automatically.  can i just empty the above records?
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MarkieSCommented:
Yes - delete the "Autologon" key

The others will probably be populated already - Blank them out as above

Always back up your registry first just in case you make any mistakes - it only take a minute

cheers
MarkieS
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connectexCommented:
Microsoft, via Sysinternals, has a nice free utility to setup/disable autologon: http://technet.microsoft.com/en-us/sysinternals/bb963905
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MarkieSCommented:
Any update on this request?
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LeeTutorretiredCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
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