Based on the discussion and ideas in Add support for ASP.NET (non-Core) projects

When using an MSBuild Project SDK obtained via NuGet (such as the SDKs in this repo) a specific version must be specified.

Either append the version to the package name:

<Project Sdk="MSBuild.SDK.SystemWeb/$version$">
  ...

Or omit the version from the SDK attribute and specify it in the version in global.json, which can be useful to synchronise versions across multiple projects in a solution:

{
  "msbuild-sdks": {
    "MSBuild.SDK.SystemWeb" : "$version$"
  }
}

You can also use the templates to easily create new projects.

For more information see