
To resolve this issue, remove the old antivirus software before enabling Windows Defender. If you are unable to enable Windows Defender and an error message displays that Windows Defender is currently not protecting your computer, the computer might have a different antivirus application installed. While you respond to that, here's something you should know:

When was the last time it worked without these issues?ĭo you have more than one anti-virus/ anti-malware programs installed on the pc?
