Strange Problem With Windows XP Update

[Joyjeet]

I do trust windows xp operating system, but now the proble is arrising. I thought of upadting windows xp, but geeting a constant error saying 0x80248011.

I have cleaned Temporary Internet files and Offline Content, also deleted Cookies and History. Please provide some help regarding this

[Devasis]

The user logon account belongs to the Guests or Limited account groups.
The security descriptor does not let authenticated users run Windows Update or Microsoft Update.
The Impersonate a client after authentication policy is missing the Administrator and Service account from the list of Users and Groups.
The 0x80248011 error code may occur when there is an issue with the database that stores Windows Update information or Microsoft Update information on your computer.

[Solomon]

The 0x80072EE7 error code may occur if the client computer cannot find the correct IP address when it tries to resolve a URL for the Windows Update Web site or for the Microsoft Update Web site. This error may occur if the Hosts file contains a static IP address.
The 0x8024402C or 0x8024502D error codes typically occur because an incorrect character exists in the proxy override settings.
The 0x800A01AD error code may occur if the Wuaueng.dll file is missing or is not registered correctly.

[MrChris-]

Click Start, click Run, type control admintools, and then click OK.
Click Computer Management.
Expand Local Users and Groups.
Select Users.
Open the account that is used to access Windows Update or Microsoft Update.
Click the Member Of tab.
Select the user account that you want to remove, and then click Remove.

[Calvin K]

Click Start, click Run, type cmd, and then click OK.
Type sc sdset wuauserv DA;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWLOCRRC;;;AU)(A;;CCLCSWRPWPD TLOCRRC;;;PU), and then press ENTER.

You will receive a "Success" message.

Note The Sc.exe tool is not available in a default Windows 2000 installation. The Sc.exe tool can be found from the Microsoft Windows 2000 Server Resource Kit.
Type Exit to close the command prompt.
Try Windows Update or Microsoft Update again.