I am getting error code 80070490 - Windows Update Encountered an Unknown Error

HubertCarpet used Ask the Experts™
Hello Experts,

I am getting error code 80070490 - Windows Update Encountered an Unknown Error on my Windows Server 2008 x64 Standard machine.  No errors in event log that I can see.  Nothing much on the web other than 'Reinstall' or 'Upgrade'.

Here's a screen grab:

Hope you can help.

Hubert C

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Rob HutchinsonTech Lead, Desktop Support

This might help:
Answer Ninja'd from Micro$oft's website:

The issue can be caused by a damaged .NET Framework component. At this time,
let's refer to the following steps to troubleshoot it:

Step 1: Download Microsoft Windows Installer CleanUp utility
1. Visit:
2. Please save the file on your Desktop
3. Please double click the msicuu2.exe file to install it onto your computer.

Step 2: Remove .NET Framework 2.0
1. Click Start Button -> All Programs->Windows Installer Clean Up.
2. Please locate and remove.NET Framework software.
After that, please perform the following suggestions to reinstall .NET
Framework 2.0 and its update.

Step 3: Reinstall .NET Framework Version 2.0 Redistributable Package and its
Please download and install the following updates one by one using sequence.
Microsoft .NET Framework Version 2.0 Redistributable Package (x86) http://download.microsoft.com/download/5/6/7/567758a3-759e-473e-bf8f-52154438565a/dotnetfx.exe 
.NET Framework 2.0 SYSTEM.WEB.DLL Security Update for Windows Vista http://www.microsoft.com/downloads/details.aspx?FamilyID=cbc9f3cf-c3c3-45c4-82e3-e11398bc2cd2&DisplayLang=en 
Rob HutchinsonTech Lead, Desktop Support

Might also want to reinstall the version of .Net framework that you are currently using and not just follow the steps blindly installing ver 2.0
Many thanks for this - sorry for not replying sooner (I did return to look at my XX account but have no open questions shown so figured it had got lost!)  Anyway, in the meantime I did a OS repair/re-install which did the trick.  I will file away your answer for future reference however as I have a feeling this might crop up again!
Question PAQ'd, 500 points refunded, and stored in the solution database.

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