title: Failed to download package 'runtime.win10-x86.Microsoft.Net.UWPCoreRuntimeSdk.2.1.1'
body: <p>I'm working with Mobile App in Visual Studio 2017, but when I first created this project and tried to build it, the following error occurred:</p>
  
  <pre><code>Failed to download package 'runtime.win10-x86.Microsoft.Net.UWPCoreRuntimeSdk.2.1.1' from 'https://api.nuget.org/v3-flatcontainer/runtime.win10-x86.microsoft.net.uwpcoreruntimesdk/2.1.1/runtime.win10-x86.microsoft.net.uwpcoreruntimesdk.2.1.1.nupkg'.
  The HTTP request to 'GET https://api.nuget.org/v3-flatcontainer/runtime.win10-x86.microsoft.net.uwpcoreruntimesdk/2.1.1/runtime.win10-x86.microsoft.net.uwpcoreruntimesdk.2.1.1.nupkg' has timed out after 100000ms.        
  </code></pre>
  
  <p>I searched and found someone suggesting I should change my DNS server from 8.8.8.8 to 208.67.222.222 but it didn't work.</p>
  
  <p>How can I solve this problem?</p>