Use OneDrive as a cloud backup to share your files and folders with others. Learn how to control permissions, allow editing, or set expiration dates.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

Check the Xbox services, games, and apps for any service outages.

Master the art of Excel formulas with our comprehensive guide. Learn how to perform calculations, manipulate cell contents, and test conditions with ease.

Learn how to locate your Microsoft Office product key, which allows you to activate and use your Office products without requiring a Microsoft account.

Learn how to access and manage your Windows sign in options. Use a password, Windows Hello, or a security key to unlock your device.

You can block messages from specific email addresses or domains from reaching your inbox. When you add an email address or domain to your blocked senders list, Outlook automatically moves messages from that sender to the Junk Email folder.

The TEXT function lets you change the way a number appears by applying formatting to it with format codes.It's useful in situations where you want to display numbers in a more readable format, or you want to combine numbers with text or symbols.

This page provides phone numbers of Microsoft customer service.

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