Describes how to use the System File Checker tool to troubleshoot missing or corrupted system files in Windows 8.1, Windows 8, Windows 7 or Windows Vista.

Windows 10. Use controlled folder access. Controlled folder access in Windows Security reviews the apps that can make changes to files in protected folders and blocks unauthorized or unsafe apps from accessing or changing files in those folders. Select Start > Settings > Update & Security > Windows Security > Virus & threat protection.

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Checking the status of a game or an app installation on your Xbox console or Windows device is easy. When viewing the status of an installation, you can also cancel or pause the installation from your queue.

Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page.

The Windows Malicious Software Removal Tool (MSRT) helps remove malicious software from computers that are running any of the following operating systems: Windows 10. Windows Server 2019. Windows Server 2016. Windows 8.1. Windows Server 2012 R2. Windows Server 2008 R2. Windows 7. Windows Server 2008.

To open File Explorer in Windows 11, select File Explorer on the taskbar or press the Windows logo key + E on your keyboard. Here are some things to try if File Explorer won't open. Check for updates. Restart your device. Reset your PC.

Uninstall from the Start menu. Select Start > All apps and search for the app in the list shown. Press and hold (or right-click) on the app, then select Uninstall. Uninstall in Settings. Select Start > Settings > Apps > Apps & features . Find the app you want to remove, select More > Uninstall.

Before you begin. Driver updates for Windows, along with many devices, such as network adapters, monitors, printers, and video cards, are automatically downloaded and installed through Windows Update. You probably already have the most recent drivers, but if you'd like to manually update or reinstall a driver, here's how: Update the device driver.

Open Windows Security settings. Windows Security is pre-installed on Windows 10 and ready for you to use at any time.