I have just uninstalled Avast Antivirus and can't get Windows Defender to run. It tells me it has been deactivated and there's no way to turn it on. If I go to the security panel, all the related options are greyed out. If i go in the Security and Maintenance in the Control Panel it lists what apps I have and still lists both Defender and Avast with no available option to choose either. What can i do? I've tried running Defender as admin (which I am as the only user anyway) and still it tells me it's been deactivated.
Edited by hamluis, 29 September 2015 - 02:01 PM.
Moved from Win 10 Support to AV/AM Software - Hamluis.