Thursday, February 10, 2011

Turn on Automatic Logon Using Regedit



This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs.

If you set a computer for automatic logon, anyone who can physically gain access to the computer can also gain access to everything that is on the computer, including any network or networks that the computer is connected to. Additionally, if you turn on automatic logon, the password is stored in the registry in plain text. The specific registry key that stores this value is remotely readable by the Authenticated Users group. Therefore, only use this setting if the computer is physically secured and if you make sure that users who you do not trust cannot remotely see the registry.



You can use Registry Editor to add your log on information. To do this, follow these steps:

1. Click Start--> click Run--> type regedit--> and then click OK.

2. Locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon

3. Using your account name and password--> double-click the DefaultUserName entry--> type your user name, and then click OK.

4. Double-click the DefaultPassword entry--> type your password under the value data box--> and then click OK.

If there is no DefaultPassword value--> create the value. To do this, follow these steps:
  • In Registry Editor--> click Edit--> click New--> and then click String Value.
  • Type DefaultPassword as the value name, and then press ENTER.
  • Double-click the newly created key--> and then type your password in the Value Data box.

Note: If the DefaultPassword registry entry does not exist, Windows XP automatically changes the value of the AutoAdminLogonregistry key from 1 (true) to 0 (false) to turn off the AutoAdminLogon feature after the computer is restarted.

5. Double-click the AutoAdminLogon entry--> type 1 in the Value Data box--> and then click OK.

If there is no AutoAdminLogon entry--> create the entry. To do this, follow these steps:
  1. In Registry Editor--> click Edit--> click New--> and then click String Value.
  2. Type AutoAdminLogon as the value name--> and then press ENTER.
  3. Double-click the newly created key--> and then type 1 in the Value Data box.

6. Exit Registry Editor.

7. Click Start--> click Restart--> and then click OK.

After your computer restarts and Windows XP starts, you can log on automatically.

If you want to bypass the automatic logon to log on as a different user, hold down the SHIFT key after you log off or after Windows XP restarts. Note that this procedure applies only to the first logon. To enforce this setting for future logoffs, the administrator must set the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
  • Value:ForceAutoLogon
  • Type: REG_SZ
  • Data: 1



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