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How to play MP4 files in Windows 10 - Microsoft Support
Play MP4 files in Windows 10 by right-clicking the file and choosing what application to open it with.
Returning items you bought from Microsoft for exchange or refund
Learn how to receive a refund or exchange for items purchased from Microsoft.
Applies To: Microsoft account dashboard
Télécharger et installer ou réinstaller Office 2019, Office 2016 ou ...
Découvrez comment installer Office 2013 sur PC ou Office pour Mac 2011.
Applies To: Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Microsoft Teams help & learning
Get help with your questions about Microsoft Teams from our how-to articles, tutorials, and support content.
Turn on app permissions for your microphone in Windows 10
To use your microphone with apps on Windows 10, you'll need to turn on some permissions in Microphone settings. Then, you'll need to check your app permissions if you want to use your microphone with apps.
OneDrive release notes - Microsoft Support
Learn about the latest feature updates and bug fixes for the OneDrive sync app across all devices.
Applies To: OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, SharePoint in Microsoft 365, Microsoft 365 admin, OneDrive (work or school), OneDrive (work or school) operated by 21Vianet, OneDrive for Mac, OneDrive for Windows, SharePoint admin center, SharePoint in Microsoft 365 Small Business, SharePoint operated by 21Vianet
Microsoft Store & billing help
Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.
Use Image Creator in Paint to generate AI art - Microsoft Support
Learn how to use Image Creator in Paint to generate diverse and realistic images using a powerful AI model called DALL-E.
Battery saving tips for Windows - Microsoft Support
Learn how to extend your PC's battery life using battery saver and other power-saving tips for Windows.
What is Smart App Control? - Microsoft Support
Smart App Control is a feature of Windows 11 that helps to block malicious, untrusted, or potentially unwanted apps from running on your device.