如何解决/解决异常未找到框架“ .NETFramework，Version = v4.6.1”的参考程序集？

Question

I tried to load a project I have and got this exception:

Severity Code Description Project File Line Suppression State Error The reference assemblies for framework ".NETFramework,Version=v4.6.1" were not found. To resolve this, install the SDK or Targeting Pack for this framework version or retarget your application to a version of the framework for which you have the SDK or Targeting Pack installed. Note that assemblies will be resolved from the Global Assembly Cache (GAC) and will be used in place of reference assemblies. Therefore your assembly may not be correctly targeted for the framework you intend.

And each time I'm trying to reload the project while loading it I'm getting this window:

I'm not sure what to download and where from.

And I can't change any of the project properties I'm getting error in all the properties windows.

Answer 1

Either select "Download the targeting pack for..." from the dialog, or open the Visual Studio Installer, click "Modify" and select the 4.6.1 targeting pack from "Individual components":

Answer 2

Windows->搜索-> Visual Studio安装程序->修改->单个组件并检查正确的版本

Answer 3

Or you can directly download the targeting pack from Microsoft's website here: https://www.microsoft.com/en-us/download/details.aspx?id=49978

You can find all kind of SDKs for both .Net Framework as well as .Net Core on the Microsoft site: https://dotnet.microsoft.com/download/visual-studio-sdks