If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

Automatically fix Windows security issues. 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.

Change your screen saver settings. Select the Start button, then go to Settings > Personalization > Lock screen, and select Screen saver settings. In the Screen Saver Settings window, choose a screen saver from the drop-down list.

Turn off, disable, or uninstall OneDrive. If you just don't want to use OneDrive, the easiest solution is to unlink it - see the steps below. Tips: If you want to stop OneDrive for a while, or not use all of it, here are some other solutions: If you want to stop syncing for a short time, learn How to pause and resume sync in OneDrive.

The Microsoft Defender Offline scan will automatically detect and remove or quarantine malware. 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.

Download drivers and firmware for Surface. Windows 11 Windows 10 Surface. Updates keep your Surface performing its best. Along with software updates for Windows 10 or Windows 11, it's important to make hardware updates, also known as updates for drivers and firmware.

If you pre-ordered a game and want to cancel, you can do so up to 10 days before the game launches at: Order history. After this time, you may be billed, and you’ll need to request a refund to cancel your order. For more info about digital game pre-orders, see: Pre-order Xbox digital games in the Microsoft Store.

You can start a scan for malware any time you like. Note: Microsoft Defender currently offers anti-malware on Windows, Android, and macOS. From the Microsoft Defender dashboard. 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.

Add an exclusion to Windows Security. If you trust a file, file type, folder, or a process that Windows Security has detected as malicious, you can stop Windows Security from alerting you or blocking the program by adding the file to the exclusions list.

If your PC is running low on free space, you might not be able to install important Windows updates, and your PC’s performance may be affected. Here are some ways to free up space so you can keep your PC up to date and running smoothly.