Windows Vista updates

[JK949]

My sister's laptop is having a little problem. Windows update produces an error code, 80240016, when she tries to get both windows updates and Windows Defender updates.
I have checked the Services to make sure they were not disabled and also have
eliminated firewall and antivirus programs as suspects. I remember this happened
to me a couple years back but can't remember how I fixed it. Any clues are appreciated.

 

[mc866]

Sounds like potential malware, I know some will block Win updates and also updates to the major antivirus products. Did you scan the system to make sure it was clean?

 

[Athena]

Roll back to the pre-update restore point and get the updates manually. Start with the system updates and once they are applied, create another restore point. Then try the Defender updates.

 

[JK949]

Not malware. It turns out it's a registry problem. I have tried a couple of fixes but they haven't worked.

 

[bruceb]

Try this and see what happens with the updates after you do this:

Go to Run... in the Start menu. Enter this command:

sfc /scannow

Also be sure you have the latest Windows Update Agent
You can get it here:

http://support.microsoft.com/kb/949104