title: VS2017 not showing suggestions & cannot navigate to the symbol under caret
body: <p>My Visual Studio is having some problems:</p>
  
  <p>Suddenly it stopped showing any useful suggestions.
  <code>artikelList</code> contains <code>articles</code> with many properties but all it shows is this:</p>
  
  <p><a href="https://i.stack.imgur.com/dxTRJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/dxTRJ.png" alt="enter image description here"></a></p>
  
  <p>Additionally, when I try to go to the implementation of a method via <code>ctrl+f12</code> it shows the following error message:</p>
  
  <p><a href="https://i.stack.imgur.com/Hg0fI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Hg0fI.png" alt="enter image description here"></a></p>
  
  <p>I've tried to restart VS17, restart my pc, reset the settings and reinstall VS17 but it didn't help.</p>
  
  <p>Has anyone had these problems as well and knows how to solve it?</p>
  
  <p>Thanks in advance</p>