Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

The CONCAT function combines the text from multiple ranges and/or strings, but it doesn't provide delimiter or IgnoreEmpty arguments.

We'll describe three connection types for keyboards and mice. Follow the description that applies to your mouse or keyboard’s connection type.

Windows 10とWindows 11でエクスプローラーを検索して開き、ファイルとフォルダーをピン留めして削除することでクイック アクセスをカスタマイズします。

Outdated software can cause problems with a Windows upgrade, so removing old or nonessential applications can help. If you plan to reinstall the application later, make sure you have the installation media and all required activation information before removing it.

Looking for an email address in Outlook? Use the Search address books box.

Discover how to convert numbers into English words in an Excel spreadsheet using the SpellNumber sample function.

This page provides phone numbers of Microsoft customer service.

Explains how to resolve relay-prohibited errors in an Outlook account.

A guide to help you identify and access your Microsoft account. How to check if your email is a Microsoft account? Go to the Microsoft account sign-in page at https://account.microsoft.com and enter your email address.