Microsoft Defender Antivirus 无法开启解决、KB2267602失败解决

文章描述了一个用户在遇到MicrosoftDefenderAntivirus自动关闭且KB2267602更新卡住的问题后,通过检查Windows功能、启用虚拟化支持、安装MicrosoftDefender应用程序防护以及尝试系统重置等方法均未解决问题。最终,用户通过安装微软电脑管家并进行优化,成功解决了Defender开启问题和KB2267602更新失败的状况。

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问题描述:

Defender无法开启、KB2267602更新失败
突然间Microsoft Defender Antivirus自动关闭了,开关全灰无法手动开启。

检查发现有Windows更新未完成,发现有个更新一直卡着无法更新完成

Microsoft Defender Antivirus 的安全智能更新 - KB2267602 (版本 1.379.86.0)
状态正在安装 - 66%

Microsoft Defender Antivirus 无法开启解决、KB2267602失败解决
Microsoft Defender Antivirus 的安全智能更新 - KB2267602卡住无法更新
Microsoft Defender Antivirus 无法开启解决、KB2267602失败解决
Windows 无法更新
直觉可能跟这个有关,于是网上找了几小时未能解决,最终调整思路,在翻设置时无意间发现:Windows安全中心->应用和浏览器控制->隔离浏览下,竟然有个,安装Microsoft Defender应用程序防护???,难道Defender突然间被卸载了???于是点进去看,点击后打开了“Windows功能”菜单,里边显示Microsoft Defender 应用程序防护竟然是灰色的,也没勾,说明确实不在了。

把鼠标放在菜单灰色处,它会提示“该固件中的虚拟化支持被禁用”无法安装?唉,难道是主板不支持?于是马上进BIOS查看,发现主板确实关闭了虚拟化支持,华硕主板BIOS开户虚拟化设置参照https://www.asus.com.cn/support/FAQ/1038245

然后再进系统,按照网络的路径去安装“Microsoft Defender应用程序防护”,这回不是灰色了,勾选上它,点确实,它会进行安装,安装完成后会要求重启,重启后Defender应用就可正常开启了。

此图片的alt属性为空;文件名为20221109235959.png
Microsoft Defender 应用程序防护灰色修复,上图为已经修复后的,没修复前的忘记截图了
然而,问题并没解决,虽然Windows功能那显示已经安装,但其实Microsoft Defender Antivirus还是被关闭无法开户使用的,而且KB2267602也依然无法更新,一直卡在66%。

最终的解决方案
网络中所有能搜到的方案都无法解决我遇到的问题,在尝试所有方法无果后,准备使用系统的重置功能。

但在重置操作中又再次失败,说发生错误中止,什么错误没说,这……。于是直接关机准备改天重装系统。在准备躺平的闲间思考,既然所有找到的方法(含Microsoft官方给出的)都无法解决,那是否可以曲线方案?找个微软自家的管理工具来试下?抱着经验和直觉的思想就去搜关键词“电脑管家”,因为官方出的一般会以这种命名,不负所望,微软真的出了个“微软电脑管家”,但是还处于测试开发阶段,于是安装。

Microsoft Defender Antivirus 无法开启解决、KB2267602失败解决
微软电脑管家界面
意外的解决了
在安装完微软电脑管家,并进行了优化体验优化后,奇迹出现,Microsoft Defender Antivirus竟然正常了!!!并且Microsoft Defender Antivirus 的安全智能更新 - KB2267602 (版本 1.379.86.0)也更新成功了,吐血!!!

Microsoft Defender Antivirus 无法开启解决、KB2267602失败解决
Defender KB2267602更新成功
这操作属实SAO,微软社区工作人员给了一众方案都无法解决,最后装个他们的软件解决了asp

### Windows Defender Antivirus Service Effectiveness and Functionality Windows Defender, now known as Microsoft Defender Antivirus, is an integrated part of the Windows operating system designed to protect against viruses, spyware, and other malicious software. The service employs multiple layers of defense to ensure comprehensive protection. #### Real-Time Protection Microsoft Defender provides real-time protection which monitors files and programs continuously while they are being accessed or modified on the computer[^1]. This ensures immediate action can be taken when potentially harmful activities occur without waiting for scheduled scans. #### Advanced Threat Detection Techniques The antivirus uses advanced threat detection techniques including heuristic analysis, behavior monitoring, cloud-based protection services, machine learning algorithms, and artificial intelligence models trained with vast amounts of data from millions of devices worldwide connected through Microsoft's Intelligent Security Graph network[^2]. #### Signature-Based Detection For traditional threats like well-known malware families, signature-based detection remains effective where each piece of identified malicious code has its unique identifier that gets added into regularly updated databases used by the engine during scanning operations. #### Exploit Guard Features Exploit guard features within this solution offer additional defenses beyond just identifying existing infections; these measures aim at preventing exploitation attempts before any damage occurs via Application Control policies restricting unauthorized applications execution along with Network Protection blocking connections attempting access suspicious sites/IP addresses listed under dynamic reputation lists maintained centrally by Microsoft[^3]. ```powershell # Example PowerShell command to check status of Windows Defender Get-MpComputerStatus | Select-Object AMServiceEnabled,AntispywareEnabled,AntivirusEnabled,RealTimeProtectionEnabled ```
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