Hello, I've got an xpsp3 pro box that is having a problem updating Security Essentials. Apparently about a week back the box began an automatic download and install of definition updates, something happened and it was not successful. I've rebooted, tried it myself from the Essentials interface and not had any luck, It's looking for a file that's in a nonexistent path. I've cleared out the windows update cache in %windir%\SoftwareDistribution, rebooted, and again reran the update no good. I then manually downloaded Security Essentials from Microsoft and atempted to uninstall the existing copy intending to install the download. That also failed while looking for a file in a nonexistent path. I tried to install the file over the existing copy, an update, that didn't work. Finally, I have downloaded the latest definition updates two files one a definition the other a net file of some kind, ran those, seemed to work alright, but didn't do anything I wasn't prompted at all. I rebooted again and thinking the files were now in place for an update tried again from security essentials, this did not work. Urgently need help! Thanks. Dave.