将目标框架从.NetStandard 2.0更改为.net 4.7.2后，无法进行nuget恢复

Question

我刚刚将我们的几个项目从.net framework 4.6.2更新到.net framework 4.7.2，我得到了以下错误：

Package Microsoft.AspNetCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Cors 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Cors 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.StaticFiles 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.StaticFiles 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Tools 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.Tools 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Logging.Debug 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.Extensions.Logging.Debug 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Relational 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.EntityFrameworkCore.Relational 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2). Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    One or more packages are incompatible with .NETFramework,Version=v4.7.2.
    Package Microsoft.AspNetCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Authentication.Cookies 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Authentication.JwtBearer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Cors 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Cors 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Diagnostics.EntityFrameworkCore 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Identity.EntityFrameworkCore 2.1.2 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.AspNetCore.StaticFiles 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.AspNetCore.StaticFiles 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.SqlServer 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Tools 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.Tools 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.Extensions.Configuration.UserSecrets 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.Extensions.Logging.Debug 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.Extensions.Logging.Debug 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.VisualStudio.Web.BrowserLink 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.EntityFrameworkCore.Relational 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.EntityFrameworkCore.Relational 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 is not compatible with net472 (.NETFramework,Version=v4.7.2) / win7-x86. Package Microsoft.VisualStudio.Web.CodeGenerators.Mvc 2.1.1 supports: netstandard2.0 (.NETStandard,Version=v2.0)
    One or more packages are incompatible with .NETFramework,Version=v4.7.2 (win7-x86).

真正让我困惑的是，.NETFramework 4.7.2与.NET标准2.0兼容，那么为什么我们会收到这个错误消息呢？这没有意义!非常感谢您的帮助。

Answer 1

我在CI服务器上遇到了这个问题，结果是安装了一个较旧的nuget.exe副本，将其升级到最新版本解决了这个问题(v4.1到4.7)

Answer 2

在AzureDevOps中为我工作的解决方案，称为VSTS：

1-添加dotnet还原步骤。

2-在Nuget恢复步骤的高级选项中，选择自定义版本并将"Path to Nuget.exe“设置为：$(Build.BinariesDirectory)\nuget.exe

3-在NuGet恢复任务添加内联github外壳之前，请参阅以下PowerScript链接：https://github.com/Microsoft/vsts-tasks/issues/3756#issuecomment-288185011

不要忘记将Shell脚本中的nuget版本更改为您想要的版本(对于我来说是4.3.0)。

Answer 3

将您的NuGet安装程序更新到版本2.*。之后，NuGet.exe将自动更新到4.3版