Microsoft KB Archive/159969: Difference between revisions
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<pre class="fixed_text">11/11/96 2:41:02 PM Security Failure Audit Logon/Logoff 529 NT | <pre class="fixed_text">11/11/96 2:41:02 PM Security Failure Audit Logon/Logoff 529 NT | ||
AUTHORITY\SYSTEM <Servername | AUTHORITY\SYSTEM <Servername> Logon Failure: | ||
Reason: Unknown user name or bad password | Reason: Unknown user name or bad password | ||
User Name: | User Name: | ||
Domain: <Domain | Domain: <Domain> | ||
Logon Type: 2 | Logon Type: 2 | ||
Logon Process: User32 | Logon Process: User32 | ||
Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0 | Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0 | ||
Workstation Name: <Servername | Workstation Name: <Servername> | ||
</pre> | </pre> | ||
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Latest revision as of 19:11, 20 July 2020
Article ID: 159969
Article Last Modified on 11/1/2006
APPLIES TO
- Microsoft Windows NT Workstation 3.5
- Microsoft Windows NT Workstation 3.51
- Microsoft Windows NT Workstation 4.0 Developer Edition
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0 Standard Edition
This article was previously published under Q159969
SYMPTOMS
Although you have the AutoLogon feature of Windows NT enabled, when you start your Windows NT system you may receive the following error message instead of being automatically logged onto the computer:
When you click OK, you are prompted for a user name and password that is valid for the system.
CAUSE
Your Windows NT system also has the registry entry DontDisplayLastUserName enabled.
RESOLUTION
To resolve this issue and use the AutoLogon feature, you will need to disable DontDisplayLastUserName using the following steps:
WARNING: Using Registry Editor incorrectly may cause serious, system-wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.
- Start Registry Editor (Regedt32.exe) and select the following subkey:
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion \Winlog
- Select the DontDisplayLastUserName value, and then click String from the Edit menu.
- Type 0 in the String Editor dialog box, and then click OK.
- Exit Registry Editor and restart your Windows NT computer.
MORE INFORMATION
The reason for this conflict is that the registry values are mutually exclusive. If you enable the DontDisplayLastUserName, you are effectively blanking out the user name during authentication. Auditing Logon and Logoff Success and Failure Events demonstrates that the user name is not available to the system:
11/11/96 2:41:02 PM Security Failure Audit Logon/Logoff 529 NT AUTHORITY\SYSTEM <Servername> Logon Failure: Reason: Unknown user name or bad password User Name: Domain: <Domain> Logon Type: 2 Logon Process: User32 Authentication Package: MICROSOFT_AUTHENTICATION_PACKAGE_V1_0 Workstation Name: <Servername>
NOTE: The User Name field is blank. When the user name is not suppressed in the registry, any other circumstance to cause a failed logon attempt always displays the user name attempting to logon. This includes gibberish for either a DefaultUserName or DefaultPassword. In these cases the user name field is occupied.
For additional information, please see the following article in the Microsoft Knowledge Base:
ARTICLE-ID: 97597
TITLE : How to Enable Automatic Logon in Windows NT
Additional query words: prodnt Auto autoadminlogon
Keywords: kbenv kbinfo KB159969