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

Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin

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

Learn how you can free up drive space in Windows. Keep your PC running smoothly and up to date by increasing the disk space.

Many users find that using an external keyboard with keyboard shortcuts for Excel helps them work more efficiently. For users with mobility or vision disabilities, keyboard shortcuts can be easier than using the touchscreen and are an essential alternative to using a mouse.

Applies To: Excel for Microsoft 365, Excel for Microsoft 365 for Mac, Excel for the web, Excel 2021, Excel 2021 for Mac, Excel 2019, Excel 2019 for Mac, Excel 2016, Excel for iPad, Excel for iPhone, Excel for Android tablets, Excel for Android phones, Excel Mobile

Find out how to boot into safe mode in Windows from Settings, the sign-in screen, and a black or blank screen.

Si vous ne parvenez pas à vous connecter à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN, ou si vous ne savez pas comment vous connecter ou vous déconnecter, voici quelques solutions.

Applies To: Outlook.com

Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Learn how to connect a Bluetooth device in Windows and adjust Bluetooth pairing settings.

Learn how to install a scanner and use it to scan pictures and documents in Windows 10.