Windows 7 無法安裝 IIS ASP.NET 模組

這個問題發生在公司的 Windows 7 電腦上，一般日常的程式功能開發大多使用 IIS Express，用到 IIS 的機會並不高，但如果要同時開多個 website，IIS 使用的資源量就會比開多個 Visual Studio 降低很多

最近一直想要釐清同事遇到的 CORS 405 錯誤，在反覆測試的過程中竟然把 IIS 搞到無法 host ASP.NET application，身為 ASP.NET 開發人員，卻無法在 IIS 上建立 ASP.NET 站台XD，讓很多測試情境無法進行，嚴重影響工作效率

當然最終手段 - 重灌，可以解決問題，但除非必要實在不好意思麻煩 MIS 同事，幸虧最後找到不用重灌的解決方法，就來看看該如何解決問題吧

重現錯誤

開啟 Turn Windows features on or off
Internet Information Services –> World Wide Web Services –> Application Development Features
勾選 ASP.NET 會連帶選取 .NET Extensibility,ISAPI Extensions,ISAPI Filters
開始安裝
出現安裝失敗錯誤
要求重新開機

錯誤訊息

Event Viewer 中出現大量錯誤

錯誤訊息內容

Unable to install counter strings because the SYSTEM\CurrentControlSet\Services\ASP.NET_2.0.50727\Performance key could not be opened or accessed. The first DWORD in the Data section contains the Win32 error code.

Installing the performance counter strings for service ASP.NET_2.0.50727 (ASP.NET_2.0.50727) failed. The first DWORD in the Data section contains the error code.

Faulting application name: aspnetca.exe, version: 7.5.7601.17855, time stamp: 0x4fc84161
Faulting module name: aspnetca.exe, version: 7.5.7601.17855, time stamp: 0x4fc84161
Exception code: 0xc0000005
Fault offset: 0x0000000000023ccb
Faulting process id: 0xc2af8
Faulting application start time: 0x01d3ab005ada9d8b
Faulting application path: C:\Windows\System32\inetsrv\aspnetca.exe
Faulting module path: C:\Windows\System32\inetsrv\aspnetca.exe
Report Id: 9993f40c-16f3-11e8-8d78-8851fb678dd9

Unable to install counter strings because the SYSTEM\CurrentControlSet\Services\ASP.NET_64_2.0.50727\Performance key could not be opened or accessed. The first DWORD in the Data section contains the Win32 error code.

Installing the performance counter strings for service ASP.NET_64_2.0.50727 (ASP.NET_64_2.0.50727) failed. The first DWORD in the Data section contains the error code.

Unable to install counter strings because the SYSTEM\CurrentControlSet\Services\ASP.NET_64\Performance key could not be opened or accessed. The first DWORD in the Data section contains the Win32 error code.

Installing the performance counter strings for service ASP.NET_64 (ASP.NET_64) failed. The first DWORD in the Data section contains the error code.

Faulting application name: aspnetca.exe, version: 7.5.7601.17855, time stamp: 0x4fc8366d
Faulting module name: aspnetca.exe, version: 7.5.7601.17855, time stamp: 0x4fc8366d
Exception code: 0xc0000005
Fault offset: 0x0001d950
Faulting process id: 0xc287c
Faulting application start time: 0x01d3ab0060a54ebf
Faulting application path: C:\Windows\SysWOW64\inetsrv\aspnetca.exe
Faulting module path: C:\Windows\SysWOW64\inetsrv\aspnetca.exe
Report Id: 9eda2f9c-16f3-11e8-8d78-8851fb678dd9

Unable to install counter strings because the SYSTEM\CurrentControlSet\Services\ASP.NET_2.0.50727\Performance key could not be opened or accessed. The first DWORD in the Data section contains the Win32 error code.

Installing the performance counter strings for service ASP.NET_2.0.50727 (ASP.NET_2.0.50727) failed. The first DWORD in the Data section contains the error code.

解決方式

移除 Internet Information Services Hostable Web Core
- 開啟 Turn Windows features on or off
- 取消勾選 Internet Information Services Hostable Web Core –> OK
重新安裝 Internet Information Services Hostable Web Core 及 ASP.NET
- 開啟 Turn Windows features on or off
- 勾選 Internet Information Services Hostable Web Core
- 勾選 ASP.NET 會連帶選取 .NET Extensibility,ISAPI Extensions,ISAPI Filters

心得

網路上也有其他網友分享可以手動加入 registry key，但我個人測試下未能真正解決問題，但 Event Viewer 所紀錄的錯誤數量確實有減少，如果有遇到相同問題試過解除安裝 Internet Information Services Hostable Web Core 無效後也許可以試試手動加入 registry key

也嘗過過重新註冊 asp.net ，前後遇到 0x800702e4 (需要以 administrator 權限執行) 與 0x80004005，仍舊無法解決問題，個人經驗可以省略這個方式的嘗試

參考資訊

Cannot enable .Net Extensibility and ASP.NET in Windows Features after VS installations

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