This article tells you how to add email accounts to the Mail and Calendar apps so you can start sending and receiving email and creating and managing events.

Add a font. Download the font files. These often come compressed in .zip folders.In one .zip folder, you might find several variations on the same font, such as “light” and “heavy.”

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How to lock cells in Excel to protect your data. You can also unlock a range of cells and grant permissions to others to edit.

Use the XLOOKUP function when you need to find things in a table or a range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term, and return a result from the same row in another column, regardless of which side the return column is on.

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.

Use your Microsoft account to sign in to Microsoft services like Windows, Microsoft 365, OneDrive, Skype, Outlook, and Xbox Live.

How to find and remove duplicates in Excel. Filter for unique values in large or small datasets to clean up your worksheets and workbooks.

Learn how to fix problems signing into your Microsoft account. Resolve password verification, locked account, and other Microsoft account login issues.