Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

Learn how to locate and manage your app permissions on Windows devices. Some apps or games need specific permissions to work properly.

The Microsoft Authenticator app helps you sign into your accounts when you're using two-step verification.

Learn how to manage your Microsoft devices. Add, remove, register, or rename a device on your Microsoft account.

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

If you are having trouble with your microphone features, the following information can help you troubleshoot and resolve issues.

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。

Learn how to troubleshoot Windows activation errors. Browse common activation errors and learn what you can do to fix them.

Learn how to download, install, and configure additional language packs for your version of Windows.