Windows update fails and shows code error 80070490

Hello, I have Windows Vista Home Premium, 32-bit operating system and installed Service Pack 2.

I set Windows to update automatically, but I noticed today that this wasn't working properly, so I clicked on "check for updates" and she came back with the following message:
"Windows could not search for new updates, error found: Code 80070490 Windows update encountered an unknown error.

Under the error message, it lists that the ' most recent Check for Updates "was on 11/25/2009 and"updates have been installed"on 11/25/2009.
But when I checked "View update history" to see updates did not, all the updates that are listed have actually managed, no updates have been identified as having failed. The last update was actually - definition update for Windows Defender on 12/29/2009 - and the previous update - update for the Microsoft XML Core Service Pack 2 (KB973688) 25 / 11 / 2009.

I had this same problem earlier this year with the code 80070490 error come when I tried to update Windows and after trying all the solutions suggest online (including the assisted Microsoft Online Support), I had to contact the Support of Tecnical Microsoft on the phone and he needed someone to help me create a completely new Windows which meant that I lost everything in my old windows.

I don't want to go through this again, can anyone help?

Ebony

I'll give you three options then I'm outta here for the new year.

1.

Visit the Microsoft Solution Center and antivirus security for resources and tools to keep your PC safe and healthy. If you have problems with the installation of the update itself, visit the Microsoft Update Support for resources and tools to keep your PC updated with the latest updates.

2 uninstall SP2, and then recover (AKA repair installation) by http://support.microsoft.com/kb/958044.

3. backup of personal data (which none should be considered 100% reliable at this point) then do a format and clean install of Windows.

HOW to do a clean install of Vista: section "If you want to reinstall Windows Vista by running a new installation...". "of http://windows.microsoft.com/en-us/windows-vista/Installing-and-reinstalling-Windows-Vista#section_3

Once installed the clean, you will have the equivalent of a "new computer" in order to take care of everything on the next page before connecting the machine to the internet or a network otherwise and before using a USB key that is not brand new, or has not been freshly formatted:

5 steps to help protect your new computer before going online
     http://www.Microsoft.com/protect/computer/advanced/XPPC.mspx

NB: No matter what Norton or McAfee free trial which is preinstalled on the computer when you bought will be reinstalled (but invalid) when Windows is reinstalled. You MUST uninstall the trial for free and download/run the deletion appropriate before installing any Windows Service Packs or IE updates and before installing your new anti-virus application.

Norton Removal Tool
     FTP://ftp.Symantec.com/public/english_us_canada/removal_tools/Norton_Removal_Tool.exe

McAfee Consumer product removal tool
     http://download.McAfee.com/Products/Licensed/cust_support_patches/MCPR.exe

See also:

Measures to help prevent spyware
http://www.Microsoft.com/security/spyware/prevent.aspx

Measures to help prevent computer worms
http://www.Microsoft.com/security/worms/prevent.aspx

Avoid fake security software!
http://www.Microsoft.com/security/antivirus/rogue.aspx

=============================

If it was my computer or I was responsible for setting, I would have #3 now. Good luck & Happy New Year!

On & outta here...

~ Robear Dyer (PA Bear) ~ MS MVP (that is to say, mail, security, Windows & Update Services) since 2002 ~ WARNING: MS MVPs represent or work for Microsoft

Tags: Windows

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