Find out how to get a DVD player app, add-on, or plug-in, or whether you can upgrade your edition of Windows to add DVD playback.

Notes: To find an item in the Choose commands from list, it may be helpful to first confirm its location and name within the app. Commands that are no longer visible in the app could still be listed here under All commands.To help identify this type of command, a more descriptive tooltip name may appear in parentheses next to the legacy command name in this form:

Note: This topic is for Microsoft 365 for business.If you have an Office for home product and you're looking for where to install Microsoft 365, see Install or reinstall Office on a PC or Mac.To see what Office for home products you have a license for, sign in with your Microsoft account to Services & subscriptions.

The security info that you replaced will be deleted in 30 days. During that time, we'll send notifications to the phone number or email address that's being removed, in case an attacker is attempting to remove your info.

Wichtig: Sie sollten die Anzahl der Administratoren auf Ihrem Windows-Gerät begrenzen, da Administratoren die vollständige Kontrolle über das System haben.Administratoren können Einstellungen ändern, Software installieren und auf alle Dateien zugreifen. Wenn zu viele Personen über diese Zugriffsebene verfügen, kann dies zu Sicherheitsrisiken wie der Installation von Schadsoftware oder ...

Important: You don't need to remove old security information unless there is an account security risk (e.g. someone else has access to your old mailbox).

Windows Hello 是登录到 Windows 设备的一种更个性化、更安全的方式。 在 Windows Hello 中，你可以使用面部识别、指纹或 PIN 登录，而不是使用密码。

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.

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Note: The options listed in this wizard vary depending on the key selected.For example, since you cannot reassign the Windows key, the only option available is to disable it.