Will Watts Senior Administrator, Security Analyst Staff member Joined Mar 4, 2012 Posts 6,527 Location %tmp% Dec 23, 2012 #1 My parents Vista computer is experiencing Windows Update error 80072f8f. I've tried a few things to fix it, but at present no results. It's currently running Vista SP1 32bit - manually installing SP2 in an attempt to fix this issue. I've run sfc /scannow - 1 error detected. comic.tff was corrupted, replaced file with copy from another computer. No more errors detected, I've run sfc /scannow several times since. All fine. GTE Cybertrust global root certificate re-installed - issue seems to be linked to this certificate. I first tried exporting the certificate and re-installing it - no luck, same errors all round. I also tried using a copy from a Windows 7 64bit computer - also no success. Possible I used the wrong certificate - Win7 seemed to have two with the same name, I copied over one but not the other. Vista just had one. Any suggestions? I'll see how the computer is after SP2 is installed, and try and do some more digging. I can always re-install the OS but I'd rather not - the only spare license key I have is for Windows 8. I would need to check if it's compatible with the computer - my parents are also more used to Windows Vista/7 so the interface change might be an issue.