Getting ready for the Windows 11 upgrade - Microsoft Support
Learn how to get ready for the Windows 11 upgrade, from making sure your device can run Windows 11 to backing up your files and installing Windows 11.
Install mobile apps and the Amazon Appstore on Windows
Learn how to use and install mobile apps on your Windows 11 PC with the Windows Subsystem for Android™.
Request a refund for digital games | Xbox Support
Find out how to submit a request for a refund for a purchase of digital Xbox content.
How to get support for Outlook.com - Microsoft Support
If you need help with Outlook.com, you can read our self-help content, or get support via email.
Applies To:
Outlook.com
I forgot the account I use with Microsoft 365 - Microsoft Support
Learn how to retrieve a forgotten username or password for your Office for home or Office for business account.
Applies To:
Excel for Microsoft 365, Word for Microsoft 365, Outlook for Microsoft 365, Access for Microsoft 365, OneNote for Microsoft 365, Publisher for Microsoft 365, Visio Plan 2, Excel for Microsoft 365 for Mac, Word for Microsoft 365 for Mac, OneNote for Microsoft 365 for Mac, Excel 2021, Word 2021, Outlook 2021, Access 2021, Project Professional 2021, Project Standard 2021, Publisher 2021, Visio Professional 2021, Visio Standard 2021, Office 2021, OneNote 2021, Excel 2021 for Mac, Word 2021 for Mac, Outlook 2021 for Mac, OneNote 2021 for Mac, Office 2021 for Mac, Excel 2019, Word 2019, Outlook 2019, Access 2019, Project Professional 2019, Project Standard 2019, Publisher 2019, Visio Professional 2019, Visio Standard 2019, Office 2019, Excel 2019 for Mac, Word 2019 for Mac, Outlook 2019 for Mac, OneNote 2019 for Mac, Office 2019 for Mac, Excel 2016, Word 2016, Outlook 2016, PowerPoint 2016, Access 2016, OneNote 2016, Project Professional 2016, Project Standard 2016, Publisher 2016, Visio Professional 2016, Visio Standard 2016, Office 2016, OneNote for Mac, SharePoint in Microsoft 365, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Microsoft 365 for Mac, Office 365 Activation, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin, Project for Office 365
Free up drive space in Windows - Microsoft Support
Find out how to free up space on your device by deleting unnecessary files, uninstalling apps, and moving files to other drives.
Stay protected with Windows Security - Microsoft Support
Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.
Microsoft アカウントのメール アドレスまたは電話番号を変更する
Microsoft アカウントにサインインするためのエイリアスを使用した Microsoft アカウントのメール アドレスまたは電話番号を変更する方法について説明します。
Applies To:
Microsoft account dashboard
Welcome to Copilot on Windows - Microsoft Support
Experience Microsoft Copilot on windows devices using the Copilot app! The Copilot app helps you get answers and inspiration from across the web, supports creativity and collaboration, and helps you focus on the task at hand.
About the Microsoft Support and Recovery Assistant
Learn how to download Microsoft Support and Recovery Assistant to help fix problems with Microsoft 365, Office, or Outlook.
Applies To:
Outlook for Microsoft 365, Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Microsoft 365 admin