If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

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.

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。

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

Use family safety settings to block inappropriate websites and searches on Windows, Xbox and mobile devices.

Learn how to upgrade your existing device to Windows 10 or buy a new PC. Get answers to common questions about upgrading to Windows 10.

使用双重验证时，Microsoft Authenticator 应用可帮助你登录帐户。

Learn how to remove malware from your PC. Use Microsoft Defender Antivirus in Windows 10 or Windows 11 to scan your PC for malware, viruses, or other threats.

Aprende a crear medios de instalación para instalar o reinstalar Windows 7, Windows 8.1 o Windows 10.

Use the new Outlook for Windows for coordinated Mail, Calendar and People apps on Windows 11.