Disable Logon to Windows Computers When Not Connected to a Domain
The default behavior in Windows when connecting to a domain is to cache the domain credentials locally so that they can be used to login even when the domain isn't available. You can set this value to 0 in order to disable logons to the computer while not connected to the domain.
Note that this will only work for computers that are configured to login to a domain, not for Home editions.
Disable Cached Logons
Open up regedit.exe through the start menu search or run box, and then navigate down to the following key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
On the right-hand pane you'll see a key called cachedlogonscount, which you can change to 0 in order to disable logging in when not connected to the domain.
This should work on either Vista or XP.
I am getting the same error on my xp, its a used laptop from my former employer.
I can't get past the logon screen to change the registry, how can I fix this problem
Thanks in advance
Try flashing the registry from a USB stick. Thats dodgy though. It would be better to ask the previous jobs' IT department to login, so the registry can be changed.
Plus, you could try and boot into safe mode on start up. It has limited options, but you can change the registry.