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Windows Update Error code 80070490
I am running Windows 7 Professional Service Pack 1 and my Windows Update has quit working. I get the error code 80070490.
I have tried Windows6.1-KB947821-v34-x64 Update Readiness Tool, MicrosoftFixit50202, MicrosoftFixit.wu.LB.Run, MicrosoftFixit50123, .and but none of them worked. I ran the Control Panel troubleshooting tool for Windows Update and it said "Updates ran successfully" and told me to run Windows Update again. I did and still got the 80070490 error code.
I have 2 backups that I have tried. One is from March 20th and the other is April 30th of this year. I restored the April backup first and Windows Update didn't work with it either so I started over and restored the March 20th backup. Windows Update worked for a little while but then the Windows Malicious Software Removal Tool tried to update and it took it a long time and Windows Update hasn't worked since.
I ran a test this morning and it told me that I had missing files and registry entries for Windows Update but I don't remember which test it was because I've ran so many.
I can't to a Windows installation repair because I have a retail version and it states that the version I am using is newer than the version I want to install. I can't uninstall Windows Service Pack 1 because it came as a package with Windows 7 and already installed with my system. I have also uninstalled the updates that were installed after the March 20th backup but that did not help either! I hate the thoughts of having to format and start over with over 200 updates PLUS reinstall everything. I have tried uploading the CBS.zip file 4 times and 3 different browsers time out each time and stop.Can someone help me with this?
Last edited by Kathy655; 15 May 2015 at 15:06.