Press and hold (or right-click) the MP4 file you want to play, select Open with, and then choose your preferred file player from the list of applications.

S’il s’agit de la première fois que vous installez Microsoft 365 vous devrez peut-être commencer par effectuer certaines étapes de configuration. Développez la section En savoir plus ci-dessous. Toutefois, si vous réinstallez Microsoft 365, et que vous avez déjà utilisé une clé de produit et que vous avez un compte associé à Microsoft 365, accédez à la section , puis connectez ...

Training: Watch and learn how to use PowerPoint in Windows. Explore PowerPoint training guides, articles, and how-to videos.

Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method

HDR content on Windows offers better brightness and color capabilities compared to traditional content (sometimes called standard dynamic range [SDR] content).

Establishing internet boundaries is an important way to protect yourself and your family from inappropriate web content. Microsoft Family Safety web and search filters work across any Windows, Xbox and mobile device that has the Microsoft Edge browser and Family Safety apps installed.

At Microsoft, we're guided by our AI principles, our Responsible AI Standard, and decades of research on AI, grounding, and privacy-preserving machine learning.Data privacy and security is a key principle of responsible AI. We aim to help our customers use our AI products responsibly, sharing our learnings, and building trust-based partnerships.

Notes: Meeting recordings won't capture whiteboards, annotations, shared notes or content shared in the stage view by apps, and also won't include videos or animations embedded in PowerPoint Live presentations.

Select Notifications to expand it, and turn notifications, banners, and sounds on or off for some or all notification senders.

若要在 Outlook.com 中获取支持，请单击此处或选择菜单栏上的帮助，然后输入查询。 如果自助服务无法解决问题，请向下滚动到“仍需要帮助？”，然后选择“是”。 若要在 Outlook.com 中联系我们，需要登录。