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Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

There may be times when you need update your security info for your Microsoft account—for example, if you get a new phone number or email address, or if you mistyped your security details the first time. Use the steps on this page to update the security info that you use to verify your Microsoft account.

Find out how to submit a request for a refund for a purchase of digital XBOX content.

更多信息 修复工具选项 .NET Framework 修复工具遵循四个步骤： 尝试排查设置问题 应用需要用户同意 (修补程序) 尝试修复所有已安装的 .NET Framework 版本 收集日志 (需要用户同意) 该工具可能会对已安装的 .NET Framework 版本进行一项或多项更改。 例如，它可以更正计算机上 Windows Installer 的状态，重置 ...

The October 13, 2026 update for Windows 11 26H2 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8.1. We recommend that you apply this update as part of your regular maintenance routines. Before you install this update, see the Prerequisites and Restart requirement sections. Summary Security improvements CVE-2026-58280 - .NET Framework Denial of Service ...

MICROSOFT SUPPORT Contact Microsoft customer support The type of support Microsoft provides depends on the product you're calling about and if you have a product for home or for business use. It can also depend on if you want help for an issue with a service like OneDrive or Outlook.com, or help with Windows, but you don't have an existing Microsoft 365 ...

檢查此頁面以了解 Xbox 功能和服務的狀態更新。

Saiba como submeter um pedido de reembolso para uma compra de conteúdos digitais da XBOX.