Remove malware from your Windows PC - Microsoft Support
Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.
Applies To:
OneDrive (home or personal), OneDrive for Windows
How to start a scan for viruses or malware in Microsoft Defender
From the Microsoft Defender dashboard. Select Device details. Select Manage in Windows Security. Select Quick scan. Tips: If you want a deeper scan, instead of selecting Quick scan in step 3, select Scan options and choose the type of scan you want. For the most complete scan, run Microsoft Defender Offline. For more about that see Help protect ...
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
Use the System File Checker tool to repair missing or corrupted system ...
Swipe in from the right edge of the screen, and then tap Search.Or, if you are using a mouse, point to the lower-right corner of the screen, and then click Search.Type Command Prompt in the Search box, right-click Command Prompt, and then click Run as administrator.If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
How to use the PC Health Check app - Microsoft Support
How to open PC Health Check. In Windows, use Search on the taskbar to search for “PC Health Check,” then select it from the list of results. If a PC Health Check update is available, you can quickly install it for the latest version.
Turn off Defender antivirus protection in Windows Security
Follow these steps to temporarily turn off Defender antivirus protection in Windows Security. Keep in mind that if you do, your device may be vulnerable to threats.
Virus & threat protection in Windows Security - Microsoft Support
Curate your notifications. Windows Security will send notifications about the health and safety of your device. You can turn these notifications on, or off, on the notifications page. In Virus & threat protection, under Virus & threat protection settings, select Manage settings, scroll down to Notifications and select Change notification settings.
Applies To:
Microsoft account dashboard
Stay protected with Windows Security - Microsoft Support
Security Windows 10 Windows 11. Windows 10 and 11 include Windows Security, which provides the latest antivirus protection. Your device will be actively protected from the moment you start Windows. Windows Security continually scans for malware ( mal icious soft ware ), viruses, and security threats.
Getting started with anti-malware in Microsoft Defender
Using anti-malware on your device. Microsoft Defender's real-time anti-malware protection runs whenever your device is on, keeping an eye out for malicious activity. Microsoft Defender will also run quick scans of your device on a daily basis, in case anything manages to elude the real-time protection. If it spots something it will attempt to ...
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
How to prevent and remove viruses and other malware
Restart your computer. When you see the computer's manufacturer's logo, repeatedly press the F8 key. When you are prompted, use the arrow keys to highlight Safe Mode with Networking, and then press Enter. Tip: Safe Mode starts Windows with only the minimum number of drivers and services necessary for operation.
Protect my PC from viruses - Microsoft Support
UAC can help keep viruses from making unwanted changes. To open UAC, swipe in from the right edge of the screen, and then tap Search. (If you're using a mouse, point to the upper-right corner of the screen, move the mouse pointer down, and then click Search .) Enter uac in the search box, and then tap or click Change User Account Control settings.