An upgrade moves your PC from a previous version of Windows—such as Windows 7 or Windows 8.1—to Windows 10. An upgrade can take place on your existing device, though Microsoft recommends using Windows 10 on a new PC to take advantage of the latest features and security improvements.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Get help with signing in, changing passwords, creating and sending mail, deleting mail, creating folders, and more in Outlook on the web.

Microsoft サポートにお問い合わせください。一般的な問題の解決策を見つけるか、サポート エージェントからサポートを ...

Country/Region. Country/Region code. Phone number. Language. Australia. N/A. 13 20 58. English. New Zealand. N/A +64. 0800 800 004 9 368 5680. English

Notes: You don't need a smartphone to receive a security code. Text messages may come from either "MSFT", a short number, or a mobile number.If you have requested a security code, you can trust the message that arrives.

Country/region. Microsoft Store sales support. Technical or download support. Egypt +20 2 353 3333. Technical support. South Africa. 0800 167 344. Technical support

To check for any security issues, go to Windows Defender settings, select Show details, and check your security status.

Choose number of pages to print per sheet: Printing multiple pages on a single sheet of paper is a useful technique to save paper, reduce printing costs, and create compact versions of your documents. The number of pages that can be printed on a single sheet depends on the capabilities of your printer and the printing options you choose (Example: 1, 2, 4, 6, 9 or 16 pages per sheet).

通过锁定 Windows 设备，可以快速保护设备，同时使应用程序和文件在后台保持打开状态。 锁定设备时，尝试访问设备的任何人都必须输入你的密码、PIN 或使用生物识别身份验证（如果已设置 Windows Hello）。