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After removing McAfee, your computer should automatically activate Windows Defender, but sometimes you need to enable it yourself. To make sure Windows Defender is turned on, look at the bottom right corner of your screen on the taskbar. Click on the small arrow to show hidden icons. If you see a shield icon with a green checkmark, that means Defender is active and working properly.
If you don’t see the shield icon or it doesn’t have a green checkmark, you’ll need to turn it on. You can easily do this by following a simple step-by-step guide. Just visit this link for clear instructions on how to turn on Windows Defender on Windows 11: How to Turn on Windows Defender Windows 11.
Getting Defender up and running is an important step to keep your PC safe after uninstalling any other security software.