If you install updates manually, you’ve probably been installing it as part of the manual update process - it’s considered an important update, not just a recommended one.Īfter Windows downloads the newest version of the Microsoft Malicious Software Removal tool, it will automatically run it in the background. If you have your computer set to automatically install Windows Updates, it will be installed automatically. Microsoft releases a new version of this tool on the second Tuesday of every month - in other words, on “Patch Tuesday.” It appears as just another patch in Windows Update.

In some instances Defender may need you to take some actions such as quarantining or removing the dangerous file or process.What is the Malicious Software Removal Tool?

If Defender finds malware on your device it'll block it, notify you, and try to remove the malware if it can. For more information see How to start a scan for malware in Microsoft Defender What if Defender finds malware? If you're concerned and want to have Microsoft Defender run a scan right now, you can do that by going to the Device protection page from the Microsoft Defender dashboard. If it spots something it will attempt to block it, and alert you so that you can take action if necessary.

Microsoft Defender will also run quick scans of your device on a daily basis, in case anything manages to elude the real-time protection. Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity. When you first set-up Microsoft Defender on your device we'll run an initial scan to make sure you're starting off clean. Note: Microsoft Defender currently offers anti-malware only on Windows, Mac, and Android.

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