Windows Defender will not start up in Windows 8.1. It just opens System 32 folder

  • Thread starter Thread starter TheManOnTheBus
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TheManOnTheBus

I have uninstalled Norton and McAfee (the latter came with my laptop).


I am trying to switch on Defender, but it just goes to the System 32 folder.


I have tried "windows feature" and trying to set it to automatic, but it just gives me error 577.


This seems to be a common problem. But no-one seems to have an answer.


Any ideas gratefully received.


It seems a common problem. I have tried all the suggestions in this link but they don't work http://answers.microsoft.com/en-us/windows/forum/windows8_1-system/error-577-when-i-attempt-to-turn-on-windows/4bf7ef42-7a50-4fe3-88ce-9f13cc2ab0f5?page=2


Thank you.

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