Erfahren Sie, wie Sie Treiber in Windows aktualisieren, indem Sie den Geräte-Manager verwenden, um einen Treiber zu aktualisieren oder neu zu installieren.

Contact Microsoft Support. Find solutions to common problems, or get help from a support agent.

If you need help with Outlook.com, you can read our self-help content, or get support via email.

If you reference a Checkbox cell with a formula, TRUE or FALSE will be passed along to that formula. For example, if you have a Checkbox in cell A1, you can use a formula like =IF(A1, "Checked", "Unchecked") to display a custom message based on the Checkbox's state.

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Hardwareprobleme können durch veraltete oder fehlerhafte Treiber verursacht werden. Stellen Sie sicher, dass der Audiotreiber auf dem neuesten Stand ist, und aktualisieren Sie ihn bei Bedarf.

To help with issues you might encounter when installing Microsoft 365 because of slow speeds or unreliable connections, as a first step download the Support and Recovery Assistant tool. (For information about this tool, go here.). Offline installer manual steps

Find help and how-to articles for Windows operating systems. Get support for Windows and learn about installation, updates, privacy, security and more.

Windows 11 in S mode is designed for security and performance, exclusively running apps from the Microsoft Store. If you want to install an app that isn't available in the Microsoft Store, you'll need to switch out of S mode.

Download our Formulas tutorial workbook. We've put together a Get started with Formulas workbook that you can download. If you’re new to Excel, or even if you have some experience with it, you can walk through Excel’s most common formulas in this tour.