title: Solution Explorer opens in Folders view
body: <p>Visual Studio 2017.</p>
  
  <p>I have a project that have been working on for some months. Now all of a sudden whenever I open the solution, Solution Explorer will show it in Folders view. I have to click the following button and select the other option to show it in Solution view:</p>
  
  <p><a href="https://i.stack.imgur.com/nH0Q7.png" rel="noreferrer"><img src="https://i.stack.imgur.com/nH0Q7.png" alt="enter image description here"></a></p>
  
  <p>How do I restore it to the usual situation?</p>