the defender popup notification has resurfaced again. said i need to update it. happened today. whats going on? win10 and its programs are unreliable. make me want to revert to another OS. the update offline installer didnt work i guess.
i would use Avast free antivirus instead
if you still want to use Windows Defender maybe Windows Defender Updates got corrupted
i would try and use command prompt as administrator
Turn off internet temporary
cd\
cd program files
cd windows defender
mpcmdrun -removedefinitions -all
Restart your computer and try download Windows Defender Updates again
good, ive already ran that through cmd. still pc wouldnt let me get updates for defender definitions...and now iam using avast free version until i can find something on "giveawayoftheday" or sharewareonsale" sites. for now, the issue is moot..not 100% solved.
I know you are using Avast right now so you will have to remove that to enable Defender again but try running a .bat file that will clear the definitions cache and trigger an update.
Code:
cd %ProgramFiles%\Windows Defender
MpCmdRun.exe -removedefinitions -dynamicsignatures
MpCmdRun.exe -SignatureUpdate