VS2015 install program run with -layout in cmd line always failed when download some packages

[skytears]

parts of log file.

[04A4:0E7C][2015-08-03T16:36:25]i000: SI: Using existing file: 'F:\Enterprise 2015\OfflineCache\installers\VS_SDK_BreadcrumbV1\en\0\vssdk_full.exe'
[04A4:0E7C][2015-08-03T16:36:25]i000: SI: Starting burn layout for product 'VS_SDK_BreadcrumbV1'. Command line: 'F:\Enterprise 2015\OfflineCache\installers\VS_SDK_BreadcrumbV1\en\0\vssdk_full.exe /quiet /layout "F:\Enterprise 2015\OfflineCache\installers\VS_SDK_BreadcrumbV1\en\0"'
[04A4:0E7C][2015-08-03T16:36:31]i000: SI: Burn layout exit code for product 'VS_SDK_BreadcrumbV1' is '0'
[04A4:0E7C][2015-08-03T16:36:32]i000: SI: Processing product entry: 'VS_Extensibility_Templates_BreadcrumbV1'.
[04A4:0E7C][2015-08-03T16:36:32]i000: SI: Using existing file: 'F:\Enterprise 2015\OfflineCache\installers\VS_Extensibility_Templates_BreadcrumbV1\en\0\Microsoft.Vsix.TemplatesPackage.vsix'
[04A4:0E7C][2015-08-03T16:36:32]i000: MUX: Some operations failed, see the detailed error messages for more information:
[04A4:0E7C][2015-08-03T16:36:32]e000: MUX: Download of product 'Win10SDK_Hidden_10.0.10240 failed. Burn layout for 'Win10SDK_Hidden_10.0.10240' failed with exit code '2003'.
[04A4:0E7C][2015-08-03T16:36:32]e000: MUX: Download of product 'Win10_Emulator_10.0.10240 failed. Burn layout for 'Win10_Emulator_10.0.10240' failed with exit code '2003'.
[04A4:0E7C][2015-08-03T16:36:32]i000: MUX: Set Result: Return Code=1603 (0x643), Error Message=某些包未能下载。有关详细信息，请参见安装日志。, Result Detail=某些包未能下载。有关详细信息，请参见安装日志。, Vital=False, Package Action=DownloadThirdParty, Package Id=VSSecondaryInstaller_box

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