If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track.

Microsoft 意识到有些客户正在运行不再获得主流支持的 Windows 版本。. 这意味着这些客户将不会收到任何安全更新来保护他们的系统免遭 CVE-2019-0708（这是一个严重的远程执行代码漏洞）的攻击。. 鉴于对客户及其业务的潜在影响，我们决定为不再获得主流支持的 ...

If Device encryption is turned off, turn it On. Turn on standard BitLocker encryption. Sign in to your Windows device with an administrator account (you may have to sign out and back in to switch accounts). For more info, see Create a local or administrator account in Windows.

If you can’t set the power mode in Power & battery settings, open Control Panel, select System and Security > Power Options, then choose a Balanced power plan. Learn how to change the power mode on your Windows PC to preserve your battery, limit notifications, and background activity.

有些用户可能在通过 Skype 共享媒体(图像或文件)时遇到问题。媒体发送可能延迟或根本不发送。

Protect your Android, iPhone, Mac, and Windows devices from threats by installing Microsoft Defender. Download Microsoft Defender on your devices either by: Scanning the following QR code. Searching for Microsoft Defender in your app store. Sharing with your devices, the following link: Copy link.

While the requirement to upgrade a Windows 10 device to Windows 11 is only that the PC be Secure Boot capable by having UEFI/BIOS enabled, you may also consider enabling or turning Secure Boot on for better security.

The precise location of your device allows apps to give you directions, show shops and restaurants that are near you, and more. Many apps and services request location information from your device, and the Windows location service gives you control over which apps are allowed to access your precise location.

If your account has been hacked, use our sign-in helper tool below to help guide you to the right solutions. The tool will ask for your email address or phone number, and either show appropriate self-help, or offer the chance to talk to an agent.

There are three methods to which you can activate your product: Online via the internet, by telephone using our automated systems, and by a live support advocate. Online: When you begin activation, Windows will try to use your internet connection to activate online.