Verwenden der WENN-Funktion in Excel zum Durchführen logischer Vergleiche zwischen Datenwerten.

Learn about what effect closing a Microsoft account might have on your other apps and services.

Learn how to get Microsoft account help, troubleshoot sign in issues, keep your account secure, and manage your Microsoft account dashboard.

此疑难解答将为计算机尚未更新至最新版本 Windows 10 版本 1607 的客户提供协助。 此更新最初只会发布给一小组有针对性的客户。 这些客户会随着时间的推移而扩展。 Windows 用户可以从本文启动助手。

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Deinstallieren oder entfernen Sie Apps und Programme in der Einstellungs-App.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

There are some solutions you can try. First steps if your Surface Type Cover or Keyboard doesn't work. To try to resolve these issues, you can begin by following the steps below to get the latest updates, detach the Type cover or keyboard, force a restart, reattach the Type Cover or Keyboard, or confirm connectivity.. Get the latest updates

Learn how to sign in and create app passwords for Microsoft apps and devices that don't support two-step verification.

Sign in using two-step verification or security info; Create app passwords in Security info (preview) Set up a phone call as your verification method