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.
Hardware warranty, services, and repair
Review the warranty terms, check your warranty status, and learn about the protection plans for your Microsoft device or accessory.
Windows - - Microsoft
要使用 Internet 连接激活 Windows 11,请: 由于 Windows 11 将在用户连接到 Internet 时自动激活,因此可通过选择“开始” >“设置” >“更新和安全” >“激活”,并在“Windows”下面查看来确认激活状态。 如果联机激活失败,请首先尝试 激活 Windows 中的激活疑难解答。. 要通过电话激活 Windows 11,请:
What is Smart App Control? - Microsoft Support
Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted. Smart App Control also helps to block potentially unwanted apps, which are apps that may cause your device to run slowly, display unexpected ads, offer extra software you didn't want, or do other things you don't expect.
Office Help & Training
We would like to show you a description here but the site won’t allow us.
Windows Windows - Microsoft
了解如何从 Windows 10 家庭版升级到 Windows 10 专业版或从 Windows 11 家庭版升级到 Windows 11 专业版,包括如何使用有效产品密钥或 Microsoft Store。
Office Help & Training
We would like to show you a description here but the site won’t allow us.
someone@example.com- - Microsoft
在 Outlook 中查找电子邮件地址? 使用 "搜索通讯簿" 框。
Applies To: Outlook 2007
| Xbox Support
按“开始”按钮 ,然后在“搜索”框中输入“Xbox”。 从结果中选择 Xbox 应用以打开该应用。; 选择左上角的玩家图片,然后选择“设置”。 在“兑换代码”下选择“兑换”。 输入由 25 个字符组成的代码,选择 下一步,然后按照提示操作。
Office - Microsoft
升级 Office 的选项会有所不同,具体取决于你当前拥有的 Office 产品的类型。 如果你的当前版本是一次性购买的非订阅 版 Office,例如 Office 家庭 & 企业版,请参阅下文。 如果已有 Microsoft 365 订阅,请选择下面的 “Microsoft 365 ”选项卡。
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, Visio Plan 2, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, Outlook for Microsoft 365 for Mac, PowerPoint for Microsoft 365 for Mac, 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, Office 2016, Excel 2016 for Mac, Word 2016 for Mac, Outlook 2016 for Mac, PowerPoint 2016 for Mac, OneNote 2016 for Mac, Office 2016 for Mac, Excel 2013, Word 2013, Outlook 2013, PowerPoint 2013, Access 2013, OneNote 2013, Visio Professional 2013, Visio 2013, Office 2013, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Project Online, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Office - Microsoft
解决激活错误. 如果 Microsoft 365 无法激活,其最后会变为未授权,且 Microsoft 365 的所有编辑功能都会被禁用。 Microsoft 可能由于多种原因变为未授权。
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, Publisher for Microsoft 365, Visio Plan 2, Excel 2021, Word 2021, Outlook 2021, PowerPoint 2021, Access 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2019, Word 2019, Outlook 2019, PowerPoint 2019, Access 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Publisher 2016, Office 2016, Microsoft 365 for home, Office for business, Office.com, Project for Office 365