Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

Find out how to change your Xbox gamertag through a browser, on your Xbox console, or your Windows device.

Learn more about the advanced security features for Outlook.com that come with an Office 365 Home or Office 365 Personal subscription.

Hotmail is now Outlook.com To sign in to Hotmail, you'll need your Microsoft account username and password. Sign in at outlook.live.com

如果您無法使用麥克風功能，或使用耳機或網路攝影機上的麥克風，下列資訊可協助您疑難解答並解決問題。 確定應用程式可以存取麥克風 如果更新 Windows 11 之後偵測不到麥克風，您可能需要提供應用程式使用麥克風的許可權。 方法如下： 選取 [ > 設定 ]> [隱私權] & 麥克風> 安全 性 ，並確定 ...

Learn how to download files from the web, change your default download location, and find files you've downloaded on your PC using Internet Explorer.

ASCII and Unicode character encoding enables computers to store and exchange data with other computers and programs. Below are lists of frequently used ASCII and Unicode Latin-based characters. For Unicode characters for non-Latin-based scripts, see Unicode character code charts by script. In this article Insert an ASCII or Unicode character into a document Common symbol character codes Common ...

访问 Microsoft 官方支持网站，获取全球范围内的产品和服务帮助，解决技术问题并提高生产力。

Microsoft 支持可帮助你处理 Microsoft 产品的问题。 查找有关 Microsoft Copilot、Microsoft 365、Windows 11、Surface 等的操作方法文章、视频和培训。

Sum values based on one or more conditions by using the SUMIFS function in a formula.