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No Security tab in Folder Properties? If Security tab is missing, then add or remove Security Tab using Group Policy or Registry Editor.
Also, for Windows Security to work properly and effectively, you have to be on the latest Windows build. So, open the Settings app using Windows + I hotkey and then go to the Windows Update tab.
One of File Explorer's largest limitations is the inability to remember tabs or open preselect pages. This simple script will help you fix that and open several File Explorer tabs upon launch.
If you're looking to scan for malware or do anything else security-related in Windows 11, this guide can help you get started with ease.
You can find Windows Update in the Update & security tab of the Settings menu (Start > Settings > Update & security), along with sections for Windows Defender, backup, recovery, activation, and ...