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Upgrading NetCore from v1.1.0 to v2.0.0 in Visual Studio 2017 Note: Any time if you see "Package restore failed. Rolling back package changes", please seelct Tools/Options:  NuGet Package Manager/General/Clear All NuGet Cache(s) Select Project / Manage Nuget Packages Step 1 Update.csproj Change     <TargetFramework>netcoreapp1.1</TargetFramework> To:     <TargetFramework>netcoreapp2.0</TargetFramework> Note: if this is not changed, you'll receive error "Package restore failed. Rolling back package changes" Step 2 Update all installed packages In NuGet Package Manager, select Updates tab, select All package and click Update Step 3 Install-Package Microsoft.EntityFrameworkCore.SqlServer See https://docs.microsoft.com/en-us/ef/core/ After done, all packages references in .csproj will be automatically updated to v2.0 For all other errors, please refer to the following must reading sites: https://docs