After downloading fixes from Microsoft Windows Update page or via Automatic Updates, you may notice that Windows XP no longer logs into your account automatically. This is caused by the .NET Framework Update from Microsoft. It creates an additional user account called ASP.NET, which you can see in the Control Panel User Accounts applet. But, don't need to remove this update or don't delete this account. You can still configure Windows XP to automatically login using these methods:

Method 1

Click Start, Run and type CONTROL USERPASSWORDS2, and click Ok. Select the user account from the list (to which account you want to automatically logon). Uncheck Users must enter a user name and password to use this computer option, and click Ok. Type the user account password and complete the process.

For Windows XP Home, don't try to auto-login as the built-in Administrator, as you'll receive a restrictions error.


Method 2: Using TweakUI

Open TweakUI (Click Start, Programs, Powertoys for Windows XP). Expand the Logon branch, and click Autologon. Turn on the "Log on automatically at......" option, type your username and password, and click Ok.