因為要用到postman，必須安裝.net framwork4.0以上版本，找了很多版本都無法安裝成功。（4.0 Client可以安裝成功，但是不匹配postman）

網上找了很多方法都無法解決，其實直接在安裝報錯的時候查詢報錯日誌看一下就行了（怪自己不夠嚴謹）。

開啟報錯日誌檔案，拉到最下面，看到紅色資訊：

Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:42:59] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:0] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:1] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:2] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:3] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:5] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:6] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:7] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:8] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:9] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:10] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:11] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:12] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:13] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:14] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:15] Returning IDRETRY. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]
[7/26/2021, 9:43:15] Returning IDOK. INSTALLMESSAGE_ERROR [Error 1321.The Installer has insufficient privileges to modify this file: C:\Windows\system32\msvcp110_clr0400.dll.]

顯示安裝依賴的msvcp110_clr0400.dll系統沒有許可權操作，將C:\Windows\system32 下面的msvcp110_clr0400.dll選中右擊點屬性->安全修改許可權完全控制就行了。

另外還有C:\Windows\system32 下面的msvcr110_clr0400.dll和 C:\Windows\SysWOW64下面的msvcr110_clr0400.dll msvcp110_clr0400.dll 都需要修改許可權。

修改完成再次安裝即可成功！