Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

Add or remove items from an existing drop-down list (also called a drop-down menu or drop-down box).

You can block messages from specific email addresses or domains from reaching your inbox. When you add an email address or domain to your blocked senders list, Outlook automatically moves messages from that sender to the Junk Email folder.

Learn how to change or reset your Windows password if you've forgotten or lost it.

Master the art of Excel formulas with our comprehensive guide. Learn how to perform calculations, manipulate cell contents, and test conditions with ease.

Learn how to download, install, and configure additional language packs for your version of Windows.

Note: If you receive a prompt asking whether to allow the app to access your camera (iOS) or to allow the app to take pictures and record video (Android). select Allow so the authenticator app can access your camera to take a picture of the QR code in the next step.If you don't allow the camera, you can still set up the authenticator app as described in Manually add an account to the app.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Learn how to find which version of Windows operating system your PC is running and device specifications.

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.