questionable warning message

By 4tailconnection
Jan 4, 2007
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  1. Every time I switch on the computer, I get an audible warning with the message “Application failed to initialize: 0x8001066ba. A problem caused Windows Defender to stop. To start the service, restart your computer or search Help and Support on how to start a service manually”.

    When I click on OK everything seems to carry on as normal but clearly, something is amiss somewhere. Any idea how I can get rid of the message or if I need to be concerned about it?
  2. howard_hopkinso

    howard_hopkinso Newcomer, in training Posts: 25,948   +17

    Uninstalling and reinstalling Windows defender may help.

    If not, read this thread HERE and post a HJT log as an attachment. This is because I want to see if you have anything nasty on your system.

    Regards Howard :)
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