To enable NuGet package restore from multiple repositories you have to edit the NuGet.targets file in the .nuget solution folder.
<ItemGroup Condition=" '$(PackageSources)' == '' "> <!-- Package sources used to restore packages. By default, registered sources under %APPDATA%\NuGet\NuGet.Config will be used --> <!-- The official NuGet package source (https://nuget.org/api/v2/) will be excluded if package sources are specified and it does not appear in the list --> <PackageSource Include="https://nuget.org/api/v2/" /> <PackageSource Include="\\\\my-server\\my-packages\\" /></ItemGroup>Important: escape the backslashes in the file share path, or you’ll get a very cryptic error message!