Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.

Add your Outlook.com, Microsoft 365, Exchange-based email, or IMAP or POP email account to your Android phone or tablet using the built-in Android Email app.

Outlook Data Files contain your email messages, calendar, tasks, and other items on your computer.

These steps can help resolve the most common issues when you receive an Excel not responding error, Excel hangs or freezes when you launch it, or open an Excel workbook.

Learn how to use your Windows PC as a mobile hotspot. Turn your Windows PC into a mobile hotspot by sharing your internet connection with other devices over Wi-Fi.

You can access another person’s mailbox if you have been granted the appropriate permissions to their mailbox. Consider these scenarios: A manager needs an assistant to monitor a specific folder on his or her mailbox.

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.

Import to Outlook app. Import email messages, contacts, and other items into Outlook for Mac. Import a .pst file into Outlook for Mac from Outlook for Windows

Learn more about what items get imported from Google Chrome and other browsers to Microsoft Edge and how to import Third-Party Passwords to Microsoft Edge.

Learn about the UNIQUE function, which returns a list of unique values in a list or range. UNIQUE is in a class of functions called dynamic arrays.