Just some of the services that need to be running:
System Restore
RPC remote procedure call service
Cryptography service
Be sure you have not disabled these XP services.
Forgive the long list, but do review all points.
Make very sure your pc has the correct & current date & local time. Having incorrect time will give the W U servers/programs a hiccup.
You may get to the windows update site, but yet a setting in Internet Explorer browser could be the blocker.
Recheck your Security & Privacy settings AND the ADVANCED settings in I.E.
1. In Internet Explorer> Tools, click Internet Options, and then click Languages....
If this box is empty, add at least one language -- your usual national language.
If you happen to have 2 or more, move English up on this list.
2. Disengage your Discussion Bar in Internet Explorer: Click View on main IE menu.
Point to Explorer Bar. If "Discuss" has a check mark, click Discuss to *remove the check mark* and clear it.
You may note, if the discussion bar is active, it would appear near the bottom of IE window.
3. I. E. Tools >Internet Options > Advanced Tab > (scroll down thru the list)
These are "some" of the items that I do have CHECKed (selected):
Under HTTP 1.1 settings --
Use HTTP 1.1 (ON / Selected)
+ Enable / check to use HTTP 1.1 with proxy servers **** <<----
and under Security :
Clear (un-check) the check box next to "Check for server certificate revocation" . ( *OFF* )
Use SSL 2.0 (ON / selected)
Use SSL 3.0 (ON)
4. Internet Explorer > Tools > Internet Options > Connections Tab
Click on LAN Settings > * Uncheck* the Automatically detect settings.
Make sure _no other_ settings on this screen are enabled.
5. Internet Explorer > main menu /Tools/Internet Options >
Security Tab/ click on green icon Trusted Sites/click Sites button.
Click "Require server verification (https

for all sites in this zone" to *clear* the selection.
In the "Add this Web site to the zone:" field, add these entries to list of "Trusted Sites" --
type
http://www.download.windowsupdate.com (click Add)
http://update.microsoft.com
http://windowsupdate.microsoft.com
http://download.windowsupdate.com
Click OK. Apply changes & close IE. Now, retry Windows Update.
--
Maurice N
MVP Windows - Shell / User
-----
John C. wrote:
> Hi,
> I noticed that Microsoft Update does't work since this week.
> I am usually using AutoUpdate, but I often check Microsoft Update
> site to get additional stuff.
> When I go to
> http://update.microsoft.com/microsof....aspx?ln=en-us
> , the "checking for the latest updates for your computer" process
> goes in an infinite loop, using Custom or express settings.
>
> Since "review your update history" is still working, I saw :
> _____________________________________
>
> Office 2003 Update for Office 2003 (KB887980) Wednesday, August 24,
> 2005 Microsoft Update website
>
> Windows XP family Critical Update for Office XP on Windows XP Service
> Pack 2 (KB885884) Thursday, August 18, 2005 Automatic Updates
>
> Windows XP family Microsoft GDI+ Detection Tool (KB873374) Thursday,
> August 18, 2005 Automatic Updates
>
> Windows XP family Update for Windows XP (KB896344) Tuesday, August
> 16, 2005 Windows Update website
> _____________________________________
>
> Since I've done a manual update on Aug 24, I have done a system
> restore to Aug 23, but the update is still stucked in an infinite
> loop. I am using Windows XP SP 2, English, it's installation is quite
> recent (Aug 15), but I didn't installed any program between Aug 23
> and today. Any Idea ? It should be cool if I don't have to reinstall
> my full windows (took me 3 days last time including the backups,
> installs and configuration)
>
> Thanks in advance.