Contact - Microsoft Support
Support for Windows 10 has ended on October 14, 2025. Learn more about your options for Windows 10.
与我们联系 | XBOX Support
需要有关 XBOX 主机、XBOX 游戏或 XBOX 网络的帮助?了解如何与我们联系。
Set time, date, and time zone settings in Windows | Microsoft Support
Learn more Summary Time, date, time zone, and daylight-saving time settings can be configured in the Settings app in Windows. To set these settings in Windows, select the desired task from the following list: Set the date and time Select Start and then select Settings > Time & language > Date & time.
Account & profile | XBOX Support
Find everything you need to manage your Microsoft account, XBOX profile, and more.
Sign in to Microsoft 365 | Microsoft Support
Learn how to sign in to Office or Microsoft 365 from a desktop application or your web browser.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, PowerPoint for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Project Online Desktop Client, Publisher for Microsoft 365, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2024, Word 2024, Outlook 2024, PowerPoint 2024, Access 2024, OneNote 2024, Project Professional 2024, Project Standard 2024, Visio Professional 2024, Visio Standard 2024, Office 2024, Excel 2024 for Mac, Word 2024 for Mac, Outlook 2024 for Mac, PowerPoint 2024 for Mac, OneNote 2024 for Mac, Office 2024 for Mac, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, PowerPoint 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, OneNote for Mac, Microsoft 365 for home, Office 365 Small Business, Microsoft 365 admin, Project Online, Microsoft 365 for Mac, Project for Office 365
Modifier l’arrière-plan du Bureau dans Windows | Microsoft Support
La modification de l’arrière-plan de votre bureau est un moyen simple mais efficace de personnaliser votre appareil Windows et de lui donner l’impression d’être le vôtre. Que vous préfériez un paysage serein, une photo préférée ou une couleur unie propre, Windows offre des options flexibles pour personnaliser l’arrière-plan de votre bureau en fonction de votre style et créer ...
查找 BitLocker 恢复密钥 | Microsoft Support
摘要 当 BitLocker 无法在 Windows 中自动解锁加密驱动器时，需要 BitLocker 恢复密钥。 这是一个 48 位数字，可让你重新获得对驱动器的访问权限。
Gaming Services Repair Tool for PC | XBOX Support
Learn how to use the Gaming Services Repair Tool to troubleshoot installation and update issues with Gaming Services on PC.
在 Windows 中自定义桌面图标 | Microsoft Support
桌面是登录 Windows 时看到的第一个屏幕，保持桌面井然有序有助于提高工作效率和整体可用性。 本文介绍如何通过自定义默认桌面图标、添加用于快速访问的快捷方式、调整图标大小以匹配你的首选项以及根据需要显示或隐藏桌面图标来个性化你的 Windows 桌面，以保持干净、高效的工作区。 自定义 ...
How to sign in to Hotmail | Microsoft Support
Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.
Applies To:
Outlook.com