If you are unable to locate the BitLocker recovery key and can't revert any configuration change that might have caused it to be required, you’ll need to reset your device using one of the Windows recovery options. Resetting your device will remove all of your files.

Open a service request in the Microsoft 365 admin center. This service is free. Get help and support, whether you're shopping now or need help with a past purchase. Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

Go to the Security info page using the steps above. Select Add sign-in method. Select Choose a method and then Authenticator app. Follow the on-screen instructions, including using your mobile device to scan the QR code, and then select Next. You'll be asked to approve a notification through the Microsoft Authenticator app, to verify your ...

Right-click. From Windows Explorer right-click the .eml, .msg, or .oft file, select Open with >, and then select Outlook (new). Double-click. From Windows Explorer double-click the .eml, .msg, or .oft file. If the file doesn't open in new Outlook, it might not be set as the default app for these file types. To update this, see Change default ...

The Microsoft Authenticator app helps you sign in to your accounts when you're using two-step verification. Two-step verification helps you to use your accounts more securely because passwords can be forgotten, stolen, or compromised.

Select Update Driver. If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions. Reinstall the device driver. In the search box on the taskbar, enter device manager, then select Device Manager.

Surface Book 3 features the best graphics on any Surface laptop, powered by the latest NVIDIA® GTX GeForce GPU, up to 2TB of storage, and up to 32GB RAM. All the connections you need for multiple devices and accessories.

Can I go back to my old operating system? Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

Manage a Microsoft subscription - Microsoft Support. Select a link below for the help you need to manage your Microsoft subscription. Turn on recurring billing. Cancel a subscription. Change payment method. Pay a past-due subscription. Third-party subscriptions.

Windows 10 system requirements - Microsoft Support. Here's what it takes to upgrade to Windows 10 on your PC or tablet: Latest OS: Make sure you're running the latest version—either Windows 7 SP1 or Windows 8.1 Update. Find out which version you're running. Need the latest version? Download Windows 7 SP1 or Windows 8.1 Update.