Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.

Change the size of your desktop icons. To resize desktop icons, right-click (or press and hold) the desktop, point to View, then select Large icons, Medium icons, or Small icons.

Learn how to connect to a Wi-fi network in Windows and manage your current network connections.

Get the steps for how to transfer photos and videos from your iPhone to your PC.

Even if you have Windows Update set to automatically download and install all important and recommended updates, you still might not be getting all of the updated drivers available for your devices.

Summary. Windows 10, versions 2004, 20H2, 21H1, and 21H2 share a common core operating system with an identical set of system files. Therefore, the new features in Windows 10, version 21H2 are included in the latest monthly quality update for Windows 10, version 2004, 20H2, and 21H1, but are in an inactive and dormant state.

Find out how to free up space on your device by deleting unnecessary files, uninstalling apps, and moving files to other drives.

Learn how to sign into your PC with Windows Hello using a PIN, facial recognition, or fingerprint.

If you’ve forgotten your Microsoft account password, learn how to do a password reset online or by using your Xbox console.

Open Device Manager. By pressing submit, your feedback will be used to improve Microsoft products and services.