Find your Windows product key - Microsoft Support
Learn how to find a Windows product key for activation, and when you'll use a digital license instead.
Applies To:
Microsoft account dashboard
Download and install or reinstall Microsoft 365 or Office 2021 on a PC ...
Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.
Applies To:
Office 2021, Office 2021 for Mac, Office 2019, Office 2019 for Mac, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Switching out of S mode in Windows - Microsoft Support
Learn how to switch out of S mode to install apps from outside of the Microsoft Store or to upgrade to Windows 11.
Update drivers manually in Windows - Microsoft Support
Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.
Manage photos and videos with Microsoft Photos app
Learn how the Photos app for Windows lets you view photos and videos from your PC alongside those from OneDrive, and keeps them organized by date, album, or folder.
Microsoft アカウントにサインインする方法 - Microsoft サポート
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。
Applies To:
Microsoft 365 for home, Outlook.com, Microsoft 365 for Mac, Microsoft 365 for Windows, Microsoft account dashboard, Microsoft Edge, Microsoft Teams, OneDrive (home or personal), OneDrive for Mac, OneDrive for Windows
Finding your BitLocker recovery key in Windows - Microsoft Support
Learn different ways to locate your BitLocker recovery key in Windows, and learn about how BitLocker might have been activated on your system.
Recall an email message that you sent in Outlook
How to recall and/or replace an email message you sent by using Microsoft 365 and your built-in Exchange Server account.
Applies To:
Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, Microsoft 365 admin, Outlook on the web, Outlook.com, New Outlook for Windows
Windows 11 System Requirements - Microsoft Support
Learn about Windows 11 minimum system requirements and how to assess your upgrade eligibility.
Phone Link requirements and setup - Microsoft Support
We recommend always having the latest version of Windows installed to make sure you get the best experience with the Phone Link .