Thank you for your response. It seems the ups project can now find the nuget packages but the ReportServerSample cannot. There are 16 build errors. The first is
Error NuGet Package restore failed for project ReportServerSample_2015: Unable to find version '16.1.0.26' of package 'Syncfusion.AspNet.Mvc5.ReportViewer'.
C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\: Package 'Syncfusion.AspNet.Mvc5.ReportViewer.16.1.0.26' is not found on source 'C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\'.
https://api.nuget.org/v3/index.json: Package 'Syncfusion.AspNet.Mvc5.ReportViewer.16.1.0.26' is not found on source 'https://api.nuget.org/v3/index.json'.
http://nuget.syncfusion.com/nuget_universalwindows/nuget/getsyncfusionpackages/universalwindows: Failed to fetch results from V2 feed at 'http://nuget.syncfusion.com/nuget_universalwindows/nuget/getsyncfusionpackages/universalwindows/Packages(Id='Syncfusion.AspNet.Mvc5.ReportViewer',Version='16.1.0.26')' with following message : Response status code does not indicate success: 500 (Internal Server Error).
Response status code does not indicate success: 500 (Internal Server Error).
https://help.syncfusion.com/aspnet/nuget-packages#get-the-syncfusion-nuget-feed-url: Failed to fetch results from V2 feed at 'https://help.syncfusion.com/aspnet/nuget-packages#get-the-syncfusion-nuget-feed-url/Packages(Id='Syncfusion.AspNet.Mvc5.ReportViewer',Version='16.1.0.26')' with following message : Response status code does not indicate success: 406 (Not Acceptable).
Response status code does not indicate success: 406 (Not Acceptable).