Important: Reactions are only available to individuals using a work or school account in Outlook with a qualifying Microsoft 365 subscription.

Describes an update that adds TLS 1.1 and TLS 1.2 to default security protocols in Windows Server 2012, Windows 7 SP1, and Windows Server 2008 R2 SP1.

You can add headers or footers at the top or bottom of a printed worksheet in Excel. For example, you might create a footer that has page numbers, the date, and the name of your file.

Linking to other workbooks is a very common task in Excel, but sometimes you might find yourself with a workbook that has links you can’t find even though Excel tells you they exist.

Use Version History to view previous versions of files stored in OneDrive or SharePoint libraries.

You can customize keyboard shortcuts (or shortcut keys) by assigning them to a command, macro, font, style, or frequently used symbol. You can also remove keyboard shortcuts.

Create a new folder when saving your document by using the Save As dialog box. With your document open, click File > Save As.

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

Learn how the service process for Microsoft Surface works and how to request service online if your Surface needs repair.

Overview of creating an organization chart. Use a SmartArt graphic to create an organization chart in Excel, Outlook, PowerPoint, or Word to show the reporting relationships in an organization, such as department managers and non-management employees.