This article was previously published under Q302346
When you start your computer after you install a third-party program, the default Windows logon interface may not appear. In Windows XP, the Welcome Screen and the Fast User Switching feature may no longer be available.
This issue can occur if the Graphical Identification and Authentication file (Msgina.dll) is replaced by a third-party program.
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
To restore the default Windows logon interface, remove the following string value from the registry:
Microsoft Windows 2000 Server SP1, Microsoft Windows 2000 Server SP2, Microsoft Windows 2000 Professional SP1, Microsoft Windows 2000 Professional SP2, Microsoft Windows Server 2003, Standard Edition (32-bit x86), Microsoft Windows Server 2003, Enterprise Edition (32-bit x86), Microsoft Windows Server 2003, Datacenter Edition (32-bit x86), Microsoft Windows XP Professional, Microsoft Windows XP Home Edition