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this seems to be occuring problem..for 2 weeks going on, windows defender anti virus wont update. last 2 times it failed. its essential that my pc has up to date protection. whats going on? -maybe ill try find way to get around this while i await some answers
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Are you using Windows 8.1 or 10?
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Disable any other antivirus program then next to see if it will update
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If it's Windows 10 try running the Updates Troubleshooter.
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windows 10 is really trying my patience..i went through the steps from the link..ran troubleshoot again, same thing, no update. -choose to view all list. restarted, same error. went to services.msc. the only thing missing in the list was MSI installer..its not listed in services. but anyways, chose to set automatic for the services i did find in list., right clicked windows update service to restart it. also did re-register wups2.dll, restarted. the issue still isnt resolved. i guess the only 2 options i didnt try are perform clean boot and disable anti virus (defender) and the last resort is repair install win 10.
so many problems cropped up with this OS.
maybe i can try the microsoft update catalog site? what do i look for in there -in terms of updating defender definitions. give me all the hints.
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ok i tried double click mpam file...nothing happened. this is very odd. first time update failed at every attempt..