there is not a specific day that they are released through auto update, MU, WU or the program's updater. There are usually 2 a week through those channels and not just one like Microsoft says but nothing specific as to WHEN exactly. I get them through the program updater myself and I check that once every 2 days or so.
Install only if you want to take immediate advantage of the new Definitions or if you want to be current on Definitions. Do not install if you prefer the weekly Updates pushed thru the program's Updater, MU or WU.
Donna, is there a certain day of the week that auto updates happen?