Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

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.

Create an alias to give you an additional email address which uses the same inbox, contact list, and account settings as your primary email address in Outlook.com.

Learn how to use Remote Desktop in Windows. On your Windows, Android, or iOS device: Open the Remote Desktop app (available for free from Microsoft Store, Google Play, and the Mac App Store), and add the name of the PC that you want to connect to (from Step 1). Select the remote PC name that you added, and then wait for the connection to complete.

Learn how to troubleshoot Bluetooth problems in Windows. Resolve issues connecting a Bluetooth device or accessory.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Discover how to effectively utilize your computer keyboard and master various keyboard shortcuts for efficient computing.

Microsoft アカウントパスワードをリセットまたは変更する方法について説明します。 忘れた Microsoft アカウントのパスワードに関するヘルプを表示します。

Share your calendar in an email. If you don't want to give someone permissions to share your calendar and see updates, you can email a static copy of your calendar for a specific date range.

Note: Some cameras won't appear in the Camera settings page.These include infrared (IR) cameras used for Windows Hello Face authentication, cameras using DirectShow technology (like many apps provided by DSLR or action camera manufacturers so their devices can be used as webcams), and proprietary cameras that aren't managed by Windows—such as industrial cameras and many networked cameras.