title: Convert a .NET Framework VB project to .NET Core
body: <p>For some reasons, I have to convert some projects (VB.NET and C#) to .NET Core.</p>
  <p>I've followed info from various sources, from
  <a href="https://stackoverflow.com/questions/42623103/convert-net-core-to-net-framework">Convert .Net Core to .Net Framework</a>
  and the Assembly Portability preventively to be conscious about the work to do.</p>
  <p>Visual Studio 2019 Intellisense, after the conversion, does not show any alert BUT Visual Basic Projects does not compile.</p>
  <p>The Visual Compiler shows the error for the namespaces
  &quot;<em>Global.Microsoft.VisualBasic.Devices</em>&quot; and &quot;<em>Global.Microsoft.VisualBasic.ApplicationServices</em>&quot; (&quot;<em>Type 'Global.Microsoft...' is not defined</em>&quot;).</p>
  <p>For each VB project, I have updated Microsoft.VisualBasic package. The current version is now 10.3.0. But the problem still persists.</p>
  <p>Every project is targeted to .NET Core 3.1 framework.</p>
  <p>What could be the problem?</p>