How to turn on automatic logon in Windows

[patris1]

http://support.microsoft.com/?scid=kb%3Ben-us%3B324737&x=17&y=8

This article describes how to configure Windows to automate the logon process by storing your password and other pertinent information in the registry database. With this feature, other users can start your computer and use the account that you establish to automatically log on.

IMPORTANT: The autologon feature is convenient; however, this feature may be a security risk. If you set a computer for autologon, anyone who can physically obtain access to the computer can gain access to all of the computer's contents, including any network or networks it is connected to. Additionally, when autologon is turned on, the password is stored in the registry in plain text. The specific registry key that stores this value can be remotely read by the Authenticated Users group. This setting is only recommended for cases it which the computer is physically secured and steps have been taken to make sure that untrusted users cannot remotely access the registry.

Use Registry Editor to turn on automatic logon

Important 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. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base: 322756 (How to back up and restore the registry in Windows XP ) How to back up and restore the registry in Windows

To use Registry Editor (Regedt32.exe) to turn on automatic logon, follow these steps:

1. Click Start, and then click Run.
2. In the Open box, type Regedt32.exe, and then press ENTER.
3. Locate the following subkey in the registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
4. Double-click the DefaultUserName entry, type your user name, and then click OK.
5. Double-click the DefaultPassword entry, type your password, and then click OK.NOTE: If the DefaultPassword value does not exist, it must be added. To add the value, follow these steps:
   
   1. On the Edit menu, click New, and then point to String Value.
   2. Type DefaultPassword, and then press ENTER.
   3. Double-click DefaultPassword.
   4. In the Edit String dialog, type your password and then click OK.
   
   NOTE: If no DefaultPassword string is specified, Windows automatically changes the value of the AutoAdminLogon key from 1 (true) to 0 (false), disabling the AutoAdminLogon feature.
6. On the Edit menu, click New, and then point to String Value.
7. Type AutoAdminLogon, and then press ENTER.
8. Double-click AutoAdminLogon.
9. In the Edit String dialog box, type 1 and then click OK.
10. Quit Registry Editor.
11. Click Start, click Shutdown, and then type a reason in the Comment text box.
12. Click OK to turn off your computer.
13. Restart your computer. You can now log on automatically.

Notes To bypass the AutoAdminLogon process and to log on as a different user, hold down the SHIFT key after you log off or after Windows restarts.

Registry change will not work if the “Logon Banner” is defined on the server either by a Group Policy object (GPO) or by a local policy. When policy is changed to not impact server, the feature works as expected.

An interactive console logon that has a different user on the server changes the DefaultUserName registry entry as the last logged on user indicator. AutoAdminLogon relies on the DefaultUserName entry to match the user and the password. Therefore, AutoAdminLogon may fail. You may configure a shutdown script to set the correct DefaultUserName entry for AutoAdminLogonAs. For more information, click the following article number to view the article in the Microsoft Knowledge Base: 119364 (AutoAdminLogon Loses DefaultUserName ) AutoAdminLogon loses DefaultUserName



APPLIES TO

• Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
• Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
• Microsoft Windows Server 2003, Standard Edition (32-bit x86)
• Microsoft Windows Server 2003, Web Edition
• Microsoft Windows Server 2003, 64-Bit Datacenter Edition
• Microsoft Windows Server 2003, Enterprise x64 Edition
• Microsoft Windows Small Business Server 2003 Premium Edition
• Microsoft Windows Small Business Server 2003 Standard Edition

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موضوعات مشابه:

• Bat file for automatic telnet in windows
• عدم نمایش Turn Windows feachurs ON or Off
• بستن automatic search for network printers and folders in Windows XP در group policy
• Automatic email
• turn on/off computers remotely

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[patris1]

http://www.windowsnetworking.com/kbase/WindowsTips/WindowsXP/RegistryTips/Security/AutomaticLogon.html

On a dedicated special function server such as print server or application server, one might want to bypass the Logon dialog box and automatically logon to the server. Not recommended. If you want to set it on your standalone workstation at home, well thats a different matter. If you want to set this on a laptop or workstation on a network, consider the word security. If you need to set autologon and twiddlying with registry hacks is daunting, see Autologon tips which points to freeware utility to do the work for you.
The following registry hack details the registry keys which control automatic logon:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: AutoAdminLogon
Type: REG_SZ
Value: 1 enable auto logon
Value: 0 disable auto logon

Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: DefaultUserName
Type: REG_SZ
Value: account to logon automatically

Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: DefaultPassword
Type: REG_SZ
Value: pw for DefaultUserName above
Caution: Password is stored in clear text. Set security permissions on Winlogon subkey to protect the account used.
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: DefaultDomainName
Type: REG_SZ
Value: if domain account, domain name; if local account, server name

Windows 2000 / XP has an additional registry setting to force autologon and ignore bypass attempts. This can be valuable with a kiosk environment:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: ForceAutoLogon
Type: REG_SZ
Value: 1

The following registry values must not exist: LegalNoticeCaption, LegalNoticeText. These values force a person logging into a PC to acknowledge having read the notice. If these values exist, the legal notice dialog hangs until someone hits enter. Don't just null out the values. Delete them.
The value DontDisplayLastUserName determines whether the logon dialog box displays the username of the last user that logged onto the PC. The value does not exist by default. If it exists, you must set it to 0 or the value of DefaultUser will be wiped and autologon will fail.
Finally, the value RunLogonScriptSync determines whether a logon script will run synchronously or asynchronously. It should not effect this process but there have been reports that setting the value=1, that is, sychronous, is more stable.
Whether you use the Autologon utility or the registry approach, there are times when you must logon as another user or need the logon dialog to appear. Hold down the shift key until during boot until the logon dialog appears. For the control freaks, even the shift override can be blocked (also see ForceAutoLogon above) :
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: IgnoreShiftOverride
Type: REG_SZ
Value: 1

If you want to enable autologon for a certain number of times, follow the above instructins and use the following Windows NT / W2K / XP registry hack:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Name: AutoLogonCount
Type: REG_DWORD
Value: # autologons you want to allow