Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.

You can choose which apps will start automatically when you start your device.

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.

After launching an Office app, you might receive a message that says Get genuine Office.. If you see this, we've determined that the Office product installed on your device isn't legitimate and you may be a victim of software counterfeiting.

Learn how to use a health report in Windows Security to manage your device performance and keep your device secure.

Erfahren Sie, wie Sie die App „PC-Integritätsprüfung“ verwenden, um die Leistung Ihres Geräts zu verbessern.

Learn how to unlock your Microsoft account and resolve 'account has been locked' error message.

Find answers to common questions about genuine Windows software.

You can refer to the contents of cells in another workbook by creating an external reference formula. An external reference (also called a link) is a reference to a cell or range on a worksheet in another Excel workbook, or a reference to a defined name in another workbook.