Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

Many tasks for Office products don't require a product key because your Microsoft account takes care of them instead.

Make the everyday easier with Windows 11. When there's a lot to do, Windows 11 helps you get it done. With intuitive navigation and new multitasking tools, it brings you the performance you want and the security you need.

Download our Formulas tutorial workbook. We've put together a Get started with Formulas workbook that you can download. If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour.

Your PC can run Windows 11 if it meets minimum (basic) system requirements. For information on basic system requirements and additional requirements for specific features, see Find Windows 11 specs, features, and computer requirements.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

In the following countries, you have the right to cancel a subscription that has recurring billing with immediate effect and receive a prorated refund as described in the Microsoft Consumer Subscription Prorated Refund Policy:

If you purchase DLC and add-ons for a game that later leaves the catalog, your DLC and add-ons will not be removed. However, to continue playing the DLC and add-ons, you’ll need to purchase a digital copy of the game from the Xbox app for Windows or the Microsoft Store, play from a disc, or obtain another form of entitlement to continue playing the game

Note: If you signed in with a Microsoft account such as an Outlook.com, Hotmail, Live, or MSN email account instead of your work or school account, sign out, and then sign in again using the correct account. Not sure which account you're signed in with? Select Account manager in the Outlook navigation header. If you're not signed in with the account you want, select Sign out and start the ...

Open User Accounts by clicking the Start button , clicking Control Panel, clicking User Accounts and Family Safety, clicking User Accounts, and then clicking Manage another account .. If you're prompted for an administrator password or confirmation, type the password or provide confirmation.