Refunds are typically issued for requests meeting the following criteria: Requests are made within 14 days of the purchase date; Requests are for games in which you haven’t accumulated a significant amount of play time

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

在“设备”设置中，选择“通过蓝牙发送或接收文件”。

Windows 8.1 Update and Windows RT 8.1 Update (also known as KB 2919355) include improvements that make your favorite apps and settings easier to find and use, provide more familiar mouse and keyboard options, and update security and performance.Here’s what you need to know about installing this important update. Check to see if it’s already installed

Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

Microsoft generally releases the MSRT on a monthly cadence as part of Windows Update or as a standalone tool. (For exceptions, see Skipped releases.)Use this tool to find and remove specific prevalent threats and reverse the changes that they made (see Covered malware families).For comprehensive malware detection and removal, consider using Windows Defender Offline or Microsoft Safety Scanner.

قبل البدء، تأكد من أن جهاز الكمبيوتر Windows 11 يدعم Bluetooth. لمزيد من المعلومات حول كيفية التحقق، راجع إصلاح مشاكل Bluetooth في Windows.إذا كنت بحاجة إلى مساعدة في إضافة جهاز بدون قدرات Bluetooth، فشاهد إضافة جهاز إلى كمبيوتر Windows.

Lithium-ion batteries wear out over time, which can result in a battery not holding a charge for as long as it did when it was new. Keeping the battery charged to 100% all the time can cause it to deteriorate faster.

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.

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.