How to use the SUM function in Excel to add individual values, cell references, ranges, or a mix of all three.

Add a contact from someone's profile card. If you're using Outlook in an organization and you click someone's name or picture in Outlook or other Office apps and services, you might see a profile card with additional information.

Summary. Windows 10, versions 2004 and 20H2 share a common core operating system with an identical set of system files. Therefore, the new features in Windows 10, version 20H2 are included in the latest monthly quality update for Windows 10, version 2004 (released October 13, 2020), but are in an inactive and dormant state.

You weren't able to find your username. If the username lookup wasn't successful, try looking for your Microsoft account username within other products or services that you know are associated with that account.

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

Training: With OneDrive, you can sync files between your computer and the cloud, so you can get to them from anywhere.

With the Microsoft Forms Quick Poll add-in for Outlook or Outlook Web App, you can create a poll in seconds right within an email message.

How to use the COUNTIF function in Excel to count the number of cells that meet values you set.

Windows 11, version 22H2; July 25, 2024—KB5040527 (OS Builds 22621.3958 and 22631.3958) Preview; July 9, 2024—KB5040442 (OS Builds 22621.3880 and 22631.3880)

Get tips for how to set up and test microphones in Windows.