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Protect yourself from tech support scams - Microsoft Support
The classic cold-call scam. The scammers call you and claim to be from the tech support team of Microsoft or another company. They offer to help solve your computer "problems".
Microsoft Support
Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.
Change your Office product key - Microsoft Support
This article applies to Office Home & Business, Office Professional, and individually purchased Office apps. To switch an Office install to or from Microsoft 365, see Switch your Office license.. Change the product key for your version
Applies To: OneNote for Microsoft 365, Visio Plan 2, OneNote for Microsoft 365 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, Office 2021, OneNote 2021, Excel 2021 for Mac, OneNote 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, Office 2019, Excel 2019 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
Contact us | Xbox Support
Need help with an Xbox console, an Xbox game, or Xbox network? Find out how to get in touch with us.
发送电子邮件时,我收到 550、553 或中继禁止的错误 - Microsoft 支持
垃圾邮件和开放中继. 未经请求的商业电子邮件有时称为垃圾邮件或垃圾邮件。 垃圾邮件数量继续增加的main原因是,发送垃圾邮件的人几乎不需要发送任何费用;事实上,发件人甚至不必通过 SMTP (发送垃圾邮件,) 他们自己的 ISP 的电子邮件服务器发送垃圾邮件。
Applies To: Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Outlook 2013
What happens if there's an unusual sign-in to your account
Select Review activity to check for any unusual sign-in attempts on the Recent activity page.If you see account activity that you're sure wasn't yours, let us know and we can help secure your account—if it's in the Unusual activity section, you can expand the activity and select This wasn't me.If it's in the Recent activity section, you can expand the activity and select Secure your account.
向 Microsoft 帐户兑换礼品卡或代码 - Microsoft 支持
如何兑换礼品卡、Xbox 下载代码或令牌. Microsoft 和 Xbox 礼品卡以及下载代码和令牌的工作方式相同:兑换到 Microsoft 帐户后,可以在 Windows 或 Xbox 上将余额用于Microsoft Store 在线商店,并且可以获取最新应用、游戏、电影、电视节目以及 Surface、Xbox 和配件的下载。
Applies To: Microsoft account dashboard
About Microsoft Authenticator - Microsoft Support
As a way to sign every time, by using a one-time password code to increase account security. This is called two-step verification or multi-factor authentication.
Applies To: Microsoft account dashboard
Microsoft Edge makes it easy to create online accounts
Microsoft Edge uses your past preferences and usage to make recommendations for which basic information would be best suited for creating an online account.
Microsoft Store & billing help
Explore Microsoft Store services From free shipping and returns to our 60-day price protection, we’re here to help you do more with best-in-class devices, software, games, and resources.