Warning: Excel provides the DATEDIF function in order to support older workbooks from Lotus 1-2-3.The DATEDIF function may calculate incorrect results under certain scenarios. Please see the known issues section of this article for further details.

Learn how to create a Gantt chart in Excel. Create a Gantt chart to present your data, schedule your project tasks, or track your progress in Excel.

Firewall & network protection in Windows Security lets you view the status of Microsoft Defender Firewall and see what networks your device is connected to.

Wirelessly connect your PC to a TV, projector, another PC, or other kind of external display that supports Miracast.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

Accessing Credential Manager. Credential Manager lets you view and delete your saved credentials for signing in to websites, connected applications, and networks.

OneDrive でアップロードとダウンロードを停止、キャンセル、または一時停止する方法について説明します。

Summary. This update includes a new user interface (UI) functionality for Windows Update in Windows.

Get started with Microsoft Teams (free). Explore your options, find out what’s new, browse help topics, and more.

Learn how to update your security processor or TPM firmware to protect Windows 10 and your device from attacks by malicious software.