AspNet5.ENU.RC1安装错误：0x80072f0d - 未指定的错误

操作系统：Windows 7 x64

安装文件：AspNet5.ENU.RC1_Update1_KB3137909.exe

安装过程中提示需要：Microsoft .NET Framework 4.5.1，如下图：

Microsoft .NET Framework 4.5.1（脱机安装程序）下载地址：

https://www.microsoft.com/zh-cn/download/details.aspx?id=40779

https://www.microsoft.com/zh-cn/download/confirmation.aspx?id=40779适用于 Windows Vista SP2、Windows 7 SP1、Windows 8、Windows Server 2008 SP2 Windows Server 2008 R2 SP1 和 Windows Server 2012 的 Microsoft .NET Framework 4.5.1（脱机安装程序）

但是我并没有安装Microsoft .NET Framework 4.5.1，而是下载安装了 Visual Studio 2015，

参考：

安装了Visual Studio 2015之后以为就不需要安装AspNet5，但是在创建AspNet5的项目时却直接打开一个下载链接，下载AspNet5安装程序。

下载后安装过程中就提示0x80072f0d - 未指定的错误。

点击“log file”部分错误内容如下：

[2660:2B08][2016-02-25T21:21:25]i338: Acquiring package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, download from: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:25]e000: Error 0x80072f0d: Failed to send request to URL: https://go.microsoft.com/fwlink/?LinkId=708515, trying to process HTTP status code anyway.[2660:2B08][2016-02-25T21:21:25]e000: Error 0x80072f0d: Unknown HTTP status code 0, returned from URL: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:25]e000: Error 0x80072f0d: Failed attempt to download URL: 'https://go.microsoft.com/fwlink/?LinkId=708515' to: 'C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64'[2660:2B08][2016-02-25T21:21:25]w343: Prompt for source of package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, path: F:\Software\System\DotNetVersionManager-x64_rc1.msi[2660:2B08][2016-02-25T21:21:28]i338: Acquiring package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, download from: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:28]e000: Error 0x80072f0d: Failed to send request to URL: https://go.microsoft.com/fwlink/?LinkId=708515, trying to process HTTP status code anyway.[2660:2B08][2016-02-25T21:21:28]e000: Error 0x80072f0d: Unknown HTTP status code 0, returned from URL: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:28]e000: Error 0x80072f0d: Failed attempt to download URL: 'https://go.microsoft.com/fwlink/?LinkId=708515' to: 'C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64'[2660:2B08][2016-02-25T21:21:28]w343: Prompt for source of package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, path: F:\Software\System\DotNetVersionManager-x64_rc1.msi[2660:2B08][2016-02-25T21:21:31]i338: Acquiring package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, download from: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:31]e000: Error 0x80072f0d: Failed to send request to URL: https://go.microsoft.com/fwlink/?LinkId=708515, trying to process HTTP status code anyway.[2660:2B08][2016-02-25T21:21:31]e000: Error 0x80072f0d: Unknown HTTP status code 0, returned from URL: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:31]e000: Error 0x80072f0d: Failed attempt to download URL: 'https://go.microsoft.com/fwlink/?LinkId=708515' to: 'C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64'[2660:2B08][2016-02-25T21:21:31]w343: Prompt for source of package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, path: F:\Software\System\DotNetVersionManager-x64_rc1.msi[2660:2B08][2016-02-25T21:21:34]i338: Acquiring package: DotNetVersionManager_x64, payload: DotNetVersionManager_x64, download from: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:34]e000: Error 0x80072f0d: Failed to send request to URL: https://go.microsoft.com/fwlink/?LinkId=708515, trying to process HTTP status code anyway.[2660:2B08][2016-02-25T21:21:34]e000: Error 0x80072f0d: Unknown HTTP status code 0, returned from URL: https://go.microsoft.com/fwlink/?LinkId=708515[2660:2B08][2016-02-25T21:21:34]e000: Error 0x80072f0d: Failed attempt to download URL: 'https://go.microsoft.com/fwlink/?LinkId=708515' to: 'C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64'[2660:2B08][2016-02-25T21:21:34]e000: Error 0x80072f0d: Failed to acquire payload from: 'https://go.microsoft.com/fwlink/?LinkId=708515' to working path: 'C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64'[2660:2B08][2016-02-25T21:21:34]e313: Failed to acquire payload: DotNetVersionManager_x64 to working path: C:\Users\abcde\AppData\Local\Temp\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\DotNetVersionManager_x64, error: 0x80072f0d.[2CD8:27B8][2016-02-25T21:21:34]i351: Removing cached package: Preparation_Uninstall_ASPNET, from path: C:\ProgramData\Package Cache\b5a923d4-a497-3a7b-b4a7-1cafadd39c95\[2CD8:27B8][2016-02-25T21:21:34]i351: Removing cached package: SetupBlocked_Install, from path: C:\ProgramData\Package Cache\aaf6a4f0-adde-3e1c-83aa-8e3772843c50\[2660:1BFC][2016-02-25T21:21:34]e000: Error 0x80072f0d: Failed while caching, aborting execution.[2CD8:1DF0][2016-02-25T21:21:34]i372: Session end, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}, resume: None, restart: None, disable resume: No[2CD8:1DF0][2016-02-25T21:21:34]i330: Removed bundle dependency provider: {6f87c276-35ab-4e52-acd7-0198970e9d8e}[2CD8:1DF0][2016-02-25T21:21:34]i352: Removing cached bundle: {ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}, from path: C:\ProgramData\Package Cache\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}\[2CD8:1DF0][2016-02-25T21:21:34]i371: Updating session, registration key: SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\{ce3f8ea8-1d35-48c9-a8c2-dd3011cd434b}, resume: None, restart initiated: No, disable resume: No[2660:1BFC][2016-02-25T21:21:35]i399: Apply complete, result: 0x80072f0d, restart: None, ba requested restart:  No

发现是有文件下载不成功，考虑到当时正在使用下载工具下载大文件，把带宽都点满了，嗯嗯，应该是这个问题，于是把下载工具关了，再重新运行安装程序，OK，安装成功了。

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人生最不幸处，是偶一失言，而祸不及；偶一失谋，而事幸成；偶一恣行，而获小利。后乃视为故常，而恬不为意。则莫大之患，由此生矣。

——弘一法师：修己与涉世