How to reset the Hosts file back to the default - Microsoft Support
Summary. This article helps you reset the Hosts file back to the default. What's the Hosts file. The Hosts file is used by the operating system to map human-friendly hostnames to numerical Internet Protocol (IP) addresses which identify and locate a host in an IP network.
Sign in to SharePoint - Microsoft Support
In the upper left corner of the window, select the app launcher > All apps > SharePoint Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.
Applies To:
SharePoint in Microsoft 365
Premium features in Outlook.com for Microsoft 365 subscribers
Learn more about premium features in Outlook.com available to Microsoft 365 Home and Microsoft 365 Personal subscribers.
Applies To:
Outlook 2021, Outlook 2021 for Mac, Outlook 2019, Outlook 2019 for Mac, Outlook 2016, Outlook 2013, Outlook.com, Outlook for Android, Outlook for iOS, Outlook for Windows Phone 10, Outlook Mail for Windows 10
Windows 帮助和学习
查找有关 Windows 操作系统的帮助和操作方法文章。 获取对 Windows 的支持，并了解安装、更新、隐私、安全等方面的信息。
Surface Laptop 2 规格和功能 - Microsoft 支持
如果你的设备配备 Windows 10 家庭版，你可以升级到 Windows 10 专业版，但需额外付费。 有关详细信息，请参阅将 Windows 10 家庭版升级到 Windows 10 专业版。. 可以将你的 Surface Laptop 2 从 Windows 10 升级到 Windows 11。
Microsoft Edge 帮助和学习
获取 Microsoft Edge 的帮助和支持。 查找 Microsoft Edge 支持内容、操作方法文章、教程等。
Auxílio e aprendizado do Microsoft Edge
Obtenha ajuda e suporte para o Microsoft Edge. Encontre conteúdo de suporte do Microsoft Edge, artigos de instruções, tutoriais e muito mais.
Ajuda e aprendizado do Windows
Encontre artigos de ajuda e instruções para sistemas operacionais Windows. Obtenha suporte para o Windows e saiba mais sobre instalação, atualizações, privacidade, segurança e muito mais.