Find out what parts of a PDF file will look correct and which won't when you open them in Word, and what to do about it.

PC で実行している Windows オペレーティング システムのバージョンとデバイスの仕様を確認する方法をご覧ください。

Cómo iniciar sesión en Outlook en la Web, acceder a su correo electrónico, contactos y calendario.

Get Microsoft 365 support, help, and learning resources. Organize your life, expand your creativity, and protect what’s important with Microsoft 365

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

Set up the Microsoft Authenticator app from the Security info page. Depending on your organization’s settings, you might be able to use an authentication app as one of your security info methods.

See what's new in recent Windows 10 and Windows 11 updates, including a chat from the taskbar, widgets, snap groups, and more.

Learn how to pin an app to the taskbar from the Start menu or apps list by right-clicking and selecting the "Pin to taskbar" option.

How to add and request read receipts and delivery notifications in Outlook.

Learn how to remove passwords from your Microsoft account to increase security.