How do enable Windows Defender on my computer?

You can only enable Windows Defender if there are no other anti-virus programs installed on your computer. If you uninstall all alternative anti-virus programs, Windows Defender will turn back on automatically.

  • Click on the Start button
  • In the search box, type Security and open Windows Security from the search results
  • If an option in the protection area is green and displays a tick, it is turned on and enabled. You don't need to take any further action
  • If an option in the protection area is yellow, there is a safety recommendation in that option to check.
  • If the option in the protection area is red and displays a cross, it is turned off and not enabled. Select the protection area and select the protection area settings. Here you can switch the On/Off slider to On to enable the protection. 
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Tel: 01970 62 2400 Email: is@aber.ac.uk