似乎Nuget仍然使用代理脚本地址(对于我们的VPN)，即使代理设置被禁用。我删除了脚本地址，它工作。

似乎Nuget仍然使用代理脚本地址(对于我们的VPN)，即使代理设置被禁用。我删除了脚本地址，它工作。

你需要在Nuget中添加代理设置。配置文件。有关详细信息，请参阅此链接:Nuget配置部分和Nuget代理设置。

安装小提琴也给我带来了类似的问题。卸载fiddler并从机器中删除fiddler代理。config(来自Framework和Framework64)解决了这个问题。

简单:

关闭VS2019 去c:\ users \you\ appdata \ roam \ nuget 删除文件NuGet。配置 重启VS2019

你可以开始了!

I had the same error message while scaffolding Identity to my ASP.NET Core MVC project. Since my connection was not behind a proxy, removing/editing proxy configurations didn't make sense. And I didn't want to delete a file or uninstall PMC either. While looking around I realized a "Clear All Nuget Cache(s)" button on Tools --> Options --> NuGet Package Manager --> General. After pressing the button I had to wait for some time for the operation to complete. After that I tried to scaffold the Identity again but it didn't work. Then I decided to restart VS and voila :)