Doesn't the crappy Microsoft Security Essentials automatically update the definitions or what? I was at a friend's PC and every few hours he would get a definitions update for MSE through Windows updates! so it doesn't automatically and silently update the definitions you have to actually do it through Windows updates? God this is one piece of crap
MSE checks for updates once per every 24 hours. If your PC is off or asleep when that scheduled check is due to happen, it won't happen. You can schedule a daily quick scan and enable the option to check for updates before a scan and that may take care of it?
MSE updates are handled by windows update. If the PC is not set to automatically update, then no, it won't do it silently. It's a Microsoft Antivirus on a Microsoft Operating system... What did you expect when you selected against Automatic Updates?
Yes, MSEt automatically updates. But 2 times a day I check manually for updates. On Windows 7 and MSE installed, you can configure by registry how many times MSE will check for updates. But with MSE on Windows 8 this option doesn´t exist anymore.
Yes it does automatically update. When it is suppose to I don't know. I just checked mine and it had updated this morning a 6:20 AM. So I thought I would try a manual update just for the heck of it. I got a new update 2 hours later a 8:30 AM. Seems they are always coming out with new updates. This is probably why your seeing MSE updates through windows update. You will get the new one your seeing the next time MSE updates itself.