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Sometimes a noticeable delay occurs when the logged on user or an administrator attempts to unlock a workstation. This because when you unlock the workstation Windows will update the domain list if the cached list's age exceeds two minutes (by default). This age limit can be modified.

Open your registry and find the key below..

Create a new DWORD value, or modify the existing value, named "DcacheMinInterval" and set it to equal the new cache time-out in seconds (decimal).

Restart Windows for the change to take effect.

		(Default)	REG_SZ	(value not set)
		DcacheMinInterval	REG_DWORD	0x000000f0 (240)

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

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.