Visual Studio C# IntelliSense not automatically displaying

Question

Just recently, my Visual Studio 2010 stopped displaying IntelliSense suggestions automatically while I am typing. I can still press ctrl+space to get it to work, but it doe

Answer 1

A new cause for this in the .net core era is having a project loaded for an unsupported .net core version. For instance if you loaded a project from GitHub that was set to use:

  
    netcoreapp2.2
    InProcess
  

But you only have 2.1 installed or find yourself using Visual Studio 2017 then the compiler wont be able to find the SDK code and thus provide intellisense.

The solution in that case might be to right click on your project and select Edit MyProject.csproj from the context menu and change the target framework as necessary:

  
    netcoreapp2.1
    InProcess
  

This assumes whatever project you loaded can actually be run under a lesser target framework.