Registry Guide for Windows Registry Guide for Windows
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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Use Active Authentication for Unlock and Screen Saver (Windows NT/2000/XP)
Category: Home > Security > Login and Authentication

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This setting controls whether a full login should be performed when a workstation is unlocked or a password is used with the screen saver. Normally Windows will not check some settings such as whether the account has been locked out.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'ForceUnlockLogon' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.

Note: For Windows XP this behavior only happens when you have Fast User Switching disabled.

Registry Editor Example
|NameTypeData|
|(Default)REG_SZ(value not set)|
|ForceUnlockLogonREG_DWORD0x00000001 (1)|
-
|HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon|
-

Settings:
System Key: [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
Name: ForceUnlockLogon
Type: REG_DWORD (DWORD Value)
Value: 0 = default authentication, 1 = online authentication

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.

Last Modified: March 23, 2002

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