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#11
https://docs.microsoft.com/en-us/win...nder-antivirus
Quick scan versus full scan and custom scan
When you set up scheduled scans, you can set up whether the scan should be a full or quick scan.
Quick scans look at all the locations where there could be malware registered to start with the system, such as registry keys and known Windows startup folders.
Combined with always-on real-time protection capability - which reviews files when they are opened and closed, and whenever a user navigates to a folder - a quick scan helps provide strong coverage both for malware that starts with the system and kernel-level malware.
In most instances, this means a quick scan is adequate to find malware that wasn't picked up by real-time protection.
A full scan can be useful on endpoints that have encountered a malware threat to identify if there are any inactive components that require a more thorough clean-up. In this instance, you may want to use a full scan when running an on-demand scan.
A custom scan allows you to specify the files and folders to scan, such as a USB drive.
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