Add or subtract days, months, or years from a date by using a formula or date functions in Excel.

Learn how to add an app to run automatically at startup. Select the Start button and scroll to find the app you want to run at startup.

As you type inside the To, Cc, or Bcc boxes, Outlook suggests recipients. The Auto-Complete List can be turned off.

Your Phone is now Microsoft Phone Link! Learn more about our recent name change for our PC and Android mobile apps.

If you’re having problems getting connected to a network and can’t get onto the Internet, here are some things you can try in Windows.

How to set up Xbox Cloud Gaming on a Steam Deck device using the Microsoft Edge browser.

You can add columns, rows, or cells to an Excel worksheet or delete them. Columns insert to the left, rows above, and cells above or to the left.

In Outlook, the black color theme includes dark mode, which provides a black background (instead of white) for the message window. You can switch to a white background for the message window if you prefer.

Learn how to type a letter online using Word for the web. Choose a letter template for online letter writing. Edit, send or print your letter online.

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