266C:22B0][2016-08-01T23:02:29]i052: Condition 'WixBundleInstalled OR NOT(NetFx45Release < 378675) OR (WixBundleAction=2)' evaluates to true.
[266C:22B0][2016-08-01T23:02:29]i052: Condition 'WixBundleInstalled OR VS2015DevEnvExists OR VS2015WebExpressExists OR (WixBundleAction=2)' evaluates to true.
[266C:22B0][2016-08-01T23:02:29]i052: Condition 'WixBundleInstalled OR (((VS2015CommunityUpdateVersion >= v14.0.25420) OR (VS2015ProfessionalUpdateVersion >= v14.0.25420) OR (VS2015EnterpriseUpdateVersion >= v14.0.25420)) OR (VS2015WebExpressUpdateVersion >= v14.0.25420)) OR (SKIP_VSU_CHECK=1) OR (WixBundleAction=2)' evaluates to true.
[266C:22B0][2016-08-01T23:02:29]i052: Condition 'WixBundleInstalled OR NOT(((VS2015CommunityUpdateVersion <> VS2015UpdateVersion) AND (VS2015CommunityExists) AND (VS2015UpdateVersionExists)) OR ((VS2015ProfessionalUpdateVersion <> VS2015UpdateVersion) AND (VS2015ProfessionalExists) AND (VS2015UpdateVersionExists)) OR ((VS2015EnterpriseUpdateVersion <> VS2015UpdateVersion) AND (VS2015EnterpriseExists) AND (VS2015UpdateVersionExists)) OR ((VS2015WebExpressUpdateVersion <> VS2015UpdateVersion) AND (VS2015WebExpressExists) AND (VS2015UpdateVersionExists))) OR (SKIP_VSU_CHECK=1) OR (WixBundleAction=2)' evaluates to false.
[266C:22B0][2016-08-01T23:02:29]e000: Setup has detected that Visual Studio 2015 Update 3 may not be completely installed. Please repair Visual Studio 2015 Update 3, then install this product again.
[266C:22B0][2016-08-01T23:02:29]e000: Error 0x81f40001: Bundle condition evaluated to false: WixBundleInstalled OR NOT(((VS2015CommunityUpdateVersion <> VS2015UpdateVersion) AND (VS2015CommunityExists) AND (VS2015UpdateVersionExists)) OR ((VS2015ProfessionalUpdateVersion <> VS2015UpdateVersion) AND (VS2015ProfessionalExists) AND (VS2015UpdateVersionExists)) OR ((VS2015EnterpriseUpdateVersion <> VS2015UpdateVersion) AND (VS2015EnterpriseExists) AND (VS2015UpdateVersionExists)) OR ((VS2015WebExpressUpdateVersion <> VS2015UpdateVersion) AND (VS2015WebExpressExists) AND (VS2015UpdateVersionExists))) OR (SKIP_VSU_CHECK=1) OR (WixBundleAction=2)
[266C:22B0][2016-08-01T23:02:29]i199: Detect complete, result: 0x0
大体就是这错误，蛋疼的很，修复了一遍还是不行，后来在stackoverflow上看到有大神回答，试了一下，果然好使，特此记录一下
命令行管理员模式下运行
DotNetCore.1.0.0-VS2015Tools.Preview2.exe SKIP_VSU_CHECK=1