If you can't sign into your Microsoft account, use the sign-in helper to identify the problem. How to use the Microsoft account sign-in helper The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If it detects a problem with your account, we'll tell you what you need to do to solve the problem. If the tool ...

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打开“设备管理器” 选择“ 开始 ”，输入 “设备管理器 ”。 然后，从搜索结果中选择 “设备管理器 ”。

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Summary This article describes the security and cumulative update for 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server 2019. Security Improvements CVE-2026-32177 - .NET Framework Elevation of Privilege vulnerability This security update addresses a Elevation of Privilege vulnerability detailed in CVE-2026-32177. CVE-2026-35433 - .NET Framework Elevation of Privilege ...

Learn what to do if you see error 0x87e50007 when trying to launch a game or app on your Xbox console.