Sign in with Microsoft
Sign in or create an account.
Hello,
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.
Microsoft Bing help - Microsoft Support
Explore subscription benefits, browse training courses, learn how to secure your device, and more.
帐户被锁定 - Microsoft 支持
如果尝试登录到帐户,但收到一条消息,表示该帐户被锁定,则这是因为与该帐户关联的活动可能违反了我们的使用条款。. 如何解锁 Microsoft 帐户
Microsoft Store & billing help
Get Microsoft billing support. Find help with Microsoft Store purchases, subscriptions, refunds, payment options, and checking your order history.
Add or subtract dates - Microsoft Support
Add or subtract days, months, or years from a date by using a formula or date functions in Excel.
Applies To: Excel for Microsoft 365, Excel for the web, Excel 2021, Excel 2019, Excel 2016
Using email in Outlook on the web - Microsoft Support
Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.
Applies To: Outlook.com, Outlook on the web for Exchange Server 2016
Tải xuống và cài đặt hoặc cài đặt lại Microsoft 365 hoặc Office 2021 ...
Tìm hiểu cách cài đặt, cài đặt lại hoặc kích hoạt Microsoft 365 hoặc Office 2019 trên PC hoặc máy Mac.
Applies To: Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Office.com
Install the latest updates for Windows - Microsoft Support
Learn about Windows service packs and download the latest updates for Windows 10 and Windows 8.1
Add, turn off, or remove extensions in Microsoft Edge
Learn how to manage extensions in Microsoft Edge, including adding, disabling, or removing them as needed.
Save disk space with OneDrive Files On-Demand for Windows
Learn how to use OneDrive Files On-Demand to sync your OneDrive files and save disk space in Windows 10.
Applies To: OneDrive for Business, SharePoint Server Subscription Edition, SharePoint Server 2019, Microsoft 365 admin, OneDrive (work or school), OneDrive (home or personal), OneDrive for Windows
Find and lock a lost Windows device - Microsoft Support
Use Find my device to locate and lock your lost or stolen Windows devices.
Applies To: Microsoft account dashboard