Learn how to reinstall Windows on your PC and how activation works after it's installed.

Learn how to use the taskbar features in Windows. Hide the taskbar, pin an app, change the location, and more with taskbar settings.

Microsoft アカウントは 、個人 向けであり、Outlook.com、Xbox、Skype などのサービスにアクセスするためのものです。 Microsoft 職場および学校アカウントは、ビジネス向け Microsoft 365 を使用する 組織 向けです。. アカウントの種類を選択するか、 違いの詳細を確認してください。

Add additional privacy protection to email messages with encryption.

How to freeze panes in Excel to keep rows or columns in your worksheet visible while you scroll, or lock them in place to create multiple worksheet areas.

Office add-ins can help you personalize your documents or speed up the way you access information on the web. For example, with an add-in you could look up items on Wikipedia or add an online map to your document without having to leave Excel.

Learn how to change Windows display language and keyboard layout settings for websites and apps.

Si vous ne parvenez pas à vous connecter à votre compte de messagerie Outlook.com, Hotmail, Live ou MSN, ou si vous ne savez pas comment vous connecter ou vous déconnecter, voici quelques solutions.

To edit a PDF, open it in Word. This works best with PDFs that are mostly text. PDFs of book chapters or something that looks like a manuscript from a copier won't be formatted well in Word.

How to use the SUMIF function in Excel to add the values in a range that meet criteria that you specify.