Additional Details
Windows is the name for lowered security settings caused by an unknown or previous malware infection. It may be so that the malware infection was previously removed but left the lowered security settings behind.
Removing or quarantining these means, in this case, restoring the settings to their defaults, in order to prevent more malware from entering the system.
One example is when the option to install unsigned ActiveX controls in Internet Explorer has been set to enable, thus allowing dangerous or malicious third party ActiveX controls to be silently installed.