Since 6/27/2011 none of my Windows updates have been successful. I have tried reinstalling them but without success. I get the error code “80070490”. I have Windows Vista Ultimate with Service Pack 2 installed, how can I resolve this?
I tried both the methods mentioned above and then retried to install the updates but they failed again. My ASUS laptop came with the Vista pre-installed, so I don't have a DVD - but I do have the serial number. I wouldn't know what to do if I have to re-install Vista.
Open the Windows Update troubleshooter
Reset WIndows Update
System Update Readiness Tool for Windows Vista
install this and then try again update.
Follow the steps mentioned:
Windows Update error 80070490
There is a solution explained here on the Microsoft site: