App & Browser Control in the Windows Security App
Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted. Smart App Control also helps to block potentially unwanted apps, which are apps that may cause your device to run slowly, display unexpected ads, offer extra software you didn't want, or do other things you don't expect.
适用于电脑的游戏服务修复工具 | Xbox Support
如果在电脑上安装或更新游戏服务时遇到问题，或者你注意到电脑版 Xbox 应用启动时缺少内容，则可能需要下载并运行适用于电脑的游戏服务修复工具。
Fix problems that block programs from being installed or removed
If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store. The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys. First, you'll need to download the ...
使用 Windows 恶意软件删除工具 (KB890830) 移除特定的流行恶意软件 - Microsoft 支持
如何解决这个问题？ Q11：即使某个月份没有新的安全公告也会重新发布该工具吗？ 解答 11： 是的。 即使特定月份没有新的安全公告，也会重新发布恶意软件删除工具并提供对最新流行恶意软件的检测和删除支持。
Smart App Control Frequently Asked Questions - Microsoft Support
How does Smart App Control work? When you try to run an app on Windows, Smart App Control will check to see if our intelligent cloud-powered security service can make a confident prediction about its safety. If the service believes the app to be safe, Smart App Control will let it run.
修复 Windows 中的应用和程序 - Microsoft 支持
选择 "开始> 设置">> 应用 > 应用和功能。 “设置”中的“应用和功能” 选择要修复的应用。 选择应用名称下的“ 高级选项” ， (某些应用没有此选项) 。 在打开的页面中，选择“ 修复 ”（如果可用）。 如果它不可用或无法解决问题，请选择“重置”。
修复 Microsoft Store 应用出现的问题 - Microsoft 支持
接下来，按照显示的顺序实施这些可能的解决方案。 确保 Windows 是最新的。 选择“ 开始 > 设置 ”> Windows 更新 > 检查更新。 如果有可用更新，请选择“立即安装”。 检查更新 确保应用适用于 Windows 11。 有关详细信息，请参阅 你的应用不适用于 Windows。
修复无法安装或删除程序的问题 - Microsoft 支持
当无法安装或删除程序时，程序安装和卸载故障排除程序可自动修复问题。 它同时修复损坏的注册表项。 首先，你需要下载故障排除程序。 下载疑难解答 如果开始下载时看到“文件下载”框，请选择“运行”或“打开”。 故障排除程序提供了你要遵循的步骤。 如果卸载选项中未列出程序，系统将 ...
How to start a scan for viruses or malware in Microsoft Defender
If you suspect that your device may have malware you should have Microsoft Defender run a scan. Here's how to do that on Windows, Mac, or Android.
Applies To:
Microsoft Defender on Android, Microsoft Defender on Mac, Microsoft Defender on Windows
Automatically fix Windows security issues - Microsoft Support
Follow these steps to automatically diagnose and repair Windows security problems by turning on UAC, DEP protection, Windows Firewall, and other Windows security options and features. Select the Download button on this page. In the File Download dialog box, click Run or Open, and then follow the steps in the Windows Security Troubleshooter.