Windows Security provides built-in security options to help protect your device from malicious software attacks. To access the features described below, tap the Windows Start button, type windows security, select it from the results, and then select Device security.

Discusses how to remove viruses, spyware, rogue software, or malware using Microsoft Security Essentials, Microsoft Safety Scanner and Microsoft Defender Offline.

For technical support, go to Contact Microsoft Support, enter your problem and select Get Help. If you still need help, select Contact Support to be routed to the best support option. Learn how to manage your Microsoft account security info and troubleshoot verification code issues.

Turn Windows Security on or off. When you get a new device and start up Windows 10 for the first time, the antivirus protection that comes installed with the device is your default security app. However, Windows Security is pre-installed and ready for you to use at any time.

Your PC isn't working well and you recently installed an app. Restore from a system restore point. You suspect your device has been infected. Use installation media to reinstall Windows 11. Select one of the recovery options below and follow the steps to try to get things working again.

如果你认为你的 Microsoft 帐户已受到黑客攻击，我们建议你立即重置密码。. 最好选择你在其他地方未使用的密码。. 若要更改密码，请转到以下“安全”部分：. Microsoft 帐户. 如果因为忘记密码或认为密码已更改而无法登录，请转到：. 重置或恢复丢失的 Microsoft ...

Secure Boot is an important security feature designed to prevent malicious software from loading when your PC starts up (boots). Most modern PCs are capable of Secure Boot, but in some instances, there may be settings that cause the PC to appear to not be capable of Secure Boot.

Find solutions to common problems, or get help from a support agent.

市场盗窃的示例包括: 从非法第三方网站购买或兑换游戏内容或代码. 声称成功兑换的代码无法从 Xbox 支持获取其他内容或资金. 滥用 Microsoft 退款策略，或通过向你的银行或金融机构申请“退单拒付”以规避退款政策. 在应用商店中利用系统故障或漏洞来获得财务 ...

Report a scam. If you feel like you’ve been the target of a technical support scam, you can help Microsoft stop cybercriminals by reporting it. Learn more about avoiding technical support scams.