解决安装 Windows SP1 时遇到的问题. 如果你尝试安装 SP1 并看到指示安装未成功的错误消息，这可能是因为用于安装更新的 Windows 维护服务商店出现问题，或者是因为你的防病毒软件阻止安装更新。

注意: 如果知道密码，但只想更改密码，请转到“account.microsoft.com 安全”选项卡，然后选择“更改我的密码”。. 如果知道用户名和密码但已停止工作，请阅读我的用户名和密码已停止工作。

Tip: Also, refer to the Quick Reference Card: VLOOKUP troubleshooting tips which presents the common reasons for #NA issues in a convenient PDF file. You can share the PDF with others or print for your own reference.

To learn more, check out the Join a Teams meeting video. Join by link. All you need to join a Teams meeting is a link. Select Join the meeting now in your meeting invite to be taken to a page where you can choose to either join on the web or download the desktop app.. If you already have the Teams app, the meeting will open there automatically.

Resolution. To fix this problem automatically, run the "Fix problems that programs cannot be installed or uninstalled" troubleshooter to repair issues that block program installation or removal because of corrupted registry keys.Important To perform many of the methods and steps in this article, you must be logged on to your computer as an administrator.

Try sending email via the web: Many email providers let you access your email via a website. Sign in to your email account via the website and confirm that you can send and receive email there. If you can't, there might be an issue with your email server.

Safe mode starts Windows with a minimal set of drivers and services to help troubleshoot issues. If a problem doesn't reappear when you start your PC in safe mode, you can eliminate the default settings and basic device drivers and services as possible causes.

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Hinweis: Wenn Sie feststellen, dass der Ordner Temp nach dem Ausführen der Datenträgerbereinigung schnell gefüllt wird, finden Sie Informationen dazu unter Geringer Speicherplatzfehler aufgrund eines vollständigen Temp-Ordners. Weitere Informationen zum Freispeichern von Speicherplatz auf Ihrem PC finden Sie unter Speicherplatz im Windows.