Windows 8 and 8.1 Forums

Windows Defender will not turn on

  1. #1

    Posts : 1
    Windows 8

    Windows Defender will not turn on

    I've spent more than two hours on trying to fix this mess. I did several fixes that did not work at all.

    It was working last night then I decided to refresh my PC. I installed several programs including drivers, windows updates and Malware Bytes (No Anti-virus installed).

    Today, I found out Windows Defender was not working. I did try launching it from search, action center, and attempted to manually start which clearly didn't work. It is set to automatic in services. All other tabs such as Update, History, and Setting are greyed out.

    I always get the response "The service couldn't be started. This programs service has stopped. You can start the service manually or restart your computer, which will start the service."

    I also deactivated UAC.

      My System SpecsSystem Spec

  2. #2

    Posts : 2,191
    Windows 8.1

    Any triggering events that lead up to your issue? Did you recently uninstall a 3rd-party AV? Any chance you have been infected by malware?
      My System SpecsSystem Spec

Windows Defender will not turn on
Related Threads
I have recently bought a new laptop and the free months trial of mcafee is due to end in 2 days time I have been told to turn on windows defender but if I click on it it just says defender is turned off everywhere I have looked for help just says to click on it and click settings but there is...
Hi Guys I'm using Win 8 Pro and following some advice on another thread I went to check my Windows Defender via 'all apps' When I click on it I just get the following message........... "Windows Defender has been turned off and it isn't monitoring your computer" I've tried a few things...
Windows Defender Won't Turn On in System Security
I'm running 8.1. When I try to run Windows Defender through services (since it is set to manual and turned off), I get the following message: Windows could not start the Windows Defender Service service on Local Computer. Error 577: Windows cannot verify the digital signature for this...
Hi guys! I'm new to the forums (first post) so please be kind, haha! I have recently built a PC myself and had no issues whatsoever, until the other day when an Action Centre notification popped up. For some reason, Spyware and Virus protection have both turned off automatically and when I am...
Hi All Oops .. I got it .. Have to turn it from Action center . Thanks .
cannot turn on windows defender. just get message box saying turned off.
I just got my Toshiba laptop Tuesday and I'm having a hard time turning Windows Defender on. I saw the tutorial, but I'm almost totally blind and I use the Jaws screen reader, so I can only use the keyboard and not the mouse. I pressed the windows key, which used to bring up the search box, but...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook