Windowsdefender.msi diseapeared

[Guest]

Hello

Every time i try to upgrade Windows Defender i get a pop up saying: "The
feature you are trying to use is on a network resource that is unavailable.
Click ok to try again, or enter an altenate path to a folder containing the
installation package "WindowsDefender.msi" in the box below.

I made a research but there is no such package in my computer.

So i tried to delete Windows Defender in order to re upload a new complete
one, but I got the same pop up and could not delete it.

I tried to download a new one hoping it would overwrite the old one but i
get the same pop up.

Every time i turn the computer on, a pop up says that Windows Defender can
not work properly.

Help!
Thank you.

 

[Bill Sanderson MVP]

Try the resolution steps in this KB article:

http://support.microsoft.com/kb/931849/en-us