Defender 0X80240016
I seem to get many odd windows defender problems.
This one happens during updates on an infrequently used PC (I switch it on maybe once or twice per month).
I do an antivir update, followed by a defender update, and I get a 0x80240016 error.
I find out that its not really a problem… restart defender (or the PC), and it will say everything is fine… how annoying.
After reinstall antivirus software and followed by a defender update. I get a 0×80240016 error message.
I’ve had this happen a few more times, and it seems that the cause is doing a manual update, while a microsoft/windows update is already in progress.
This looks a lot like your typical microsoft “department a doesn’t talk to department b”… so application a won’t work smoothly with other MS applications.
MS office is another good example: its biggest design flaw (from over 10 years ago) is that word, excel, powerpoint, outlook, etc are all seperate applications (with no common core).
Hey I had the same issue with my computer. I wasted my time on it for
many days but finally I got a solution from this link
http://www.microsoftliveassist.com/using-windows-8-windows-defender-update-fails-with-error-0×80240022-how-do-i-get-my-definitions-to-update/