Learn how to troubleshoot USB-C problems in Windows and fix USB devices, ports, and adapters not working properly.

Contact Microsoft Support. What's new. Surface Pro; Surface Laptop; Surface Laptop Studio 2

Install Office 2007. Insert your Office 2007 CD into the drive. If the setup wizard doesn’t start automatically, navigate to the CD drive and click SETUP.EXE.

请执行以下任一操作： 在 “翻译为 ”下拉列表中，选择要将页面翻译成的语言。 默认值是为Microsoft Edge设置的语言。

Discover the latest features in Office 2021, including new ways to create content, manage data, and communicate effectively.

Learn how to earn Microsoft Rewards points when you browse the web with Microsoft Edge, search on Bing.com, and more.

Learn why it's important to have a backup, and how Windows Backup can help you keep your files and settings safe.

Microsoft's products and services work best if you use the same language and region across all your devices, and in all of your app and Store settings.

Learn how to run Windows Update Troubleshooter to resolve errors downloading or installing Windows updates.

Learn how to access Windows device security settings in Windows Security to help protect your device from malicious software.