Learn how to turn on device encryption, or standard BitLocker encryption in Windows.

To manage BitLocker encryption. Tap Start and in the search box, type Manage BitLocker and then select it from the list of results. Note: You'll only see this option if BitLocker is available for your device. It isn't available on Windows Home edition.

If your system is asking you for your BitLocker recovery key, the following information may help you locate your recovery key and understand why you're being asked to provide it. Important: Microsoft support is unable to provide, or recreate, a lost BitLocker recovery key.

Having a backup copy of your BitLocker recovery key helps to prevent serious issues later. It takes less than a minute to back up your key and this article will show you how.

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.

Turn Windows Security on or off. When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app. However, Windows Security is pre-installed and ready for you to use at any time.

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.

Insert your security key into the USB port or tap your NFC reader to verify your identity. Follow the on-screen instructions, based on your specific security key manufacturer. If your key manufacturer isn't listed in the on-screen instructions, refer to the manufacturer's site for more information.

Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

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. In addition to this real-time protection, updates are downloaded automatically to help keep your device safe and protect it from threats.