Microsoft support is here to help you with Microsoft products. Find how-to articles, videos, and training for Microsoft Copilot, Microsoft 365, Windows, Surface, and more.

Microsoft Defender is a security app that helps people and families stay safer online with malware protection, web protection, real-time security notifications, and security tips.Microsoft Defender is included in a Microsoft 365 Family or Personal subscription and works on your phone (Android or iOS), PC, and Mac.

If this is the first time you're installing Microsoft 365 or Office, you may have to complete a set of pre-installation steps or you may need to follow different steps than what's shown below.

注: 次から選択して、最大 10 種類の方法でサインインを確認できます。 メール アドレスまたは電話番号。 自分のアカウントである必要はありません。アカウントを確認するために使用する場合は、アクセスできる必要があります。

Make sure you have the latest updates on your Windows device. Press the Start button , then choose Settings.Go to Update & security (Windows Update on Windows 11), then select Check for updates.; Check your Game Bar settings. Press the Start button , then choose Settings.Go to Gaming > Game bar, then turn on Record game clips, screenshots, and broadcast using Game bar.

Email encryption. Outlook.com includes encryption and prevent forwarding features that ensure your confidential and personal information you share via email stays encrypted and doesn’t leave Microsoft 365.

Use the XLOOKUP function when you need to find things in a table or a range by row. For example, look up the price of an automotive part by the part number, or find an employee name based on their employee ID. With XLOOKUP, you can look in one column for a search term, and return a result from the same row in another column, regardless of which side the return column is on.

Uninstall from the Start menu. Select Start > All apps and search for the app in the list shown.

This troubleshooter assists customers whose machines are not yet updated to the latest release, Windows 10 Version 1607. This update will initially be released only to a small set of targeted customers. This set will expand over time. Windows users can start the assistant from this article.

When you sign in to sync to Microsoft Edge , you can easily browse the web from any of your devices, keep your favorites organized, and always pick up right where you left off.. Sign in to sync your account on your computer Setting up sync on your computer. In Microsoft Edge, select the profile image in the browser taskbar.