We're committed to delivering continuous innovation by releasing new features and enhancements into Windows 11 more frequently. Windows devices get new functionality at different times as Microsoft delivers non-security updates, fixes, improvements, and enhancements via several servicing technologies—including controlled feature rollout (CFR). ...

If you already have an account signed in to OneDrive and you want to add or remove another account, you’ll do that in OneDrive Settings.

Updates to the default screen and sleep settings now help you use energy more efficiently and extend battery life. You can find efficiency settings in Windows 11 at Settings > System > Power & battery.. For a guided walkthrough of how each of the power and battery settings can improve your device's performance, click the button to open the Get Help app:

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

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.

Learn how to use antivirus protection in Windows Security to protect your Windows PC against malware, viruses, and other threats.

Learn what you can do if you're not receiving account aign-in verification codes.

Quick Assist lets someone you trust take over your Windows 10 or Windows 11 PC and fix a problem from wherever they are.

How to stop website notifications in Microsoft Edge. You can remove or block notifications for individual websites in the following ways: Remove or block notifications in Edge settings

了解如何使用产品密钥或数字许可证激活 Windows、检查激活状态，以及链接Microsoft 帐户。