If you get an email about unusual activity on your Microsoft account, or if you’re worried that someone else might have used your account, go to the Recent activity page.You’ll see when your Microsoft account was signed in during the last 30 days, along with any device or app-specific info.

Learn how to recover files that have been lost, deleted, or accidentally changed.

Learn how to get ready for the Windows 11 upgrade, from making sure your device can run Windows 11 to backing up your files and installing Windows 11.

Outlook.com、Hotmail、Live、または MSN のメール アカウントにサインインできない場合、サインインまたはサインアウトする方法がわからない場合は、次の解決方法を試してみてください。

Learn how to locate, install, and share files with custom fonts compatible with Microsoft Office applications.

Master the art of Excel formulas with our comprehensive guide. Learn how to perform calculations, manipulate cell contents, and test conditions with ease.

Learn how to update Windows to ensure your device operates smoothly and securely with the latest features.

Wenn Sie Ihre Hardware geändert haben, um ein Upgrade auf Windows 11 durchzuführen und das System die Änderung nicht rechtzeitig erkennt, wird in diesem Artikel erläutert, wie Sie die Bewertung manuell initiieren.

Learn more about how to find all your apps and programs in the all new Windows Start menu.

Configure cameras In Camera settings, you can set default settings for each camera. The settings are stored for each camera and each user account—they don't synchronize between multiple Windows devices.