
In Windows 10 and Windows 11, Microsoft Defender Offline can be run with one click directly from the Windows Security app. You can use Microsoft Defender Offline if you suspect a malware infection, or you want to confirm a thorough clean of the endpoint after a malware outbreak. The scan runs from outside the normal Windows kernel so it can target malware that attempts to bypass the Windows shell, such as viruses and rootkits that infect or overwrite the master boot record (MBR). Check this post for more details if you are still on Windows 7 or 8.1.Microsoft Defender Offline is an antimalware scanning tool that lets you boot and run a scan from a trusted environment. It’s a standalone program that you can download and run on your system to scan the PC during the boot process. Windows Defender Offline is nothing new and has been around back in 2011. This new scan offline feature is part of Windows 10 build 14271 which is currently released to Fast Ring users only at the moment. The computer reboots and launches Windows Defender to do a full system scan before starting in Windows 10. Go to Settings app → Update & Security → Windows Defender, scroll down a bit until you see Windows Defender Offline.Īnd click Scan Offline to start the process within a minute after the message “Computer will start within a minute” pops up. Here is how you can launch it if you feel the need to scan your computer to make sure it’s clean. Assuming you are using Windows Defender which is the anti-virus solution built in Windows 10, you may not know that it has an offline scan feature that lets you scan your Windows 10 system during boot time without internet connection.
