title: Why isn't the Error List in Visual Studio 2017 showing all errors and how do we fix it?
body: <p>I have two coworkers that just installed Visual Studio 2017.  On some solutions, they're not seeing errors in the Error List when they rebuild or run a solution.  All of these solutions were originally created in Visual Studio 2015; don't know if that matters.  On the Output tab, they can see the errors along with warnings, but when they go to the Error List tab, it says 0 errors.  I've found examples of other people having this problem, but can't find any solutions:</p>
  
  <p><a href="https://developercommunity.visualstudio.com/content/problem/130531/error-list-does-not-show-all-errors.html" rel="nofollow noreferrer">https://developercommunity.visualstudio.com/content/problem/130531/error-list-does-not-show-all-errors.html</a></p>
  
  <p><a href="https://developercommunity.visualstudio.com/content/problem/17823/build-failing-error-not-showing-in-error-list-wind.html" rel="nofollow noreferrer">https://developercommunity.visualstudio.com/content/problem/17823/build-failing-error-not-showing-in-error-list-wind.html</a></p>
  
  <p><a href="https://developercommunity.visualstudio.com/content/problem/44541/error-list-still-not-working.html" rel="nofollow noreferrer">https://developercommunity.visualstudio.com/content/problem/44541/error-list-still-not-working.html</a></p>
  
  <p>How do I get the Error List so it shows errors again?</p>