: Go to the Scan section → Custom Scan → Select all drives and check "Scan for rootkits" for the deepest possible check. 3. The "Deepest" Option: Offline Scanning :
: Open Windows Security → Virus & threat protection → Scan options → Full scan . virus scanner
Some malware hides while the OS is running. Use Microsoft Defender Offline or a portable tool like Emsisoft Emergency Kit from a USB drive. This scans the system before the malware has a chance to "wake up". How to Run a Full Scan Using Windows Security : Go to the Scan section → Custom
A "Deep Scan" (often called a Full Scan) goes beyond common folders to examine every bit of data on your storage drives. : virus scanner