Cannot search updates

I just bought a Lenovo X100e Laptop (more netbook though). I hooked it up to my domain, installed antivirus n firewall, trial version of Office 2007 and then started updating it. The first problem was with Office SP2 which it just wouldn't download. It said it was downloaded to 67% but then I got an error message (with I believe the same code as below).

I installed i manually from Microsofts website and it went fine. Then I once again ran Windows Update and it had found another 10 updates which seemed to install fine. I the restarted the computer (without being promted to do so). But when I after the restart ran Windows Update it gave the following message (roughly translated to english):

"An error occured when the search for new updates was done. Code 8024402C. There has occured and unknown error in windows update."

I have tried it several times but it's still the same. Updates seems a little tricky with Windows 7 as I bought a stationary with Win7 as well (both Professional), and have been having some problems there as well. Any ideas?
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This website may be of some use as it goes through some troubleshooting steps.

Hope this helps.
Rory de LeurConsultant End-User ComputingCommented:
Try to disable your antivirus and firewall solution (temperately) and see if that helps (if so you know where the problem is)

or try one of solutions that are mentioned in this support article:

Robo08Author Commented:

I tried the solutions suggested:

I disabled firewall - no effect.
I changed internet connection - no effect.
I connected to our workplace (SBS server 2008) thourhg VPN - no effect.

None of these solutions did seem viable anyway, since I installed 10 updates via Windows update just before the error occurred.
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Robo08Author Commented:
Tried the solutions that criple suggested:

First with the proxy settings I didn't have any and thus no exceptions either (and apparently it worked without less than an hour ago). I did do the restart of update service in cmd-mode - no effect.

Then I set IE to the "Automatically detect settings" option - no effect

Since it worked just a short while ago it doesnt feel like it's a settings, firewall or network problem.
Robo08Author Commented:

Still no solution. I thought I might have had it when I discovered that the security program (Trend Micro Worry Free Business) had started a business hour URL filter. I disabled it but still the same problem (restarted as well).
Robo08Author Commented:
It turns out I had to clear some new updates on the server, then connect via VPN to get a proper update. After it was completely updated, it still was the same - I had to connect to domain network to get the message that all updates are installed (otherwise I'd get the same error message).

I don't know why this started to happen since this was not a problem previously during installs, nor is it a problem on any of the other computers I use on the domain.

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Windows 7

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