title: xamarin.forms can't build FIRST project in visual studio 2015
body: <p><strong>=========================================</strong></p>
  
  <p><strong>UPDATE: This is answered in my post below.</strong></p>
  
  <p><strong>=========================================</strong></p>
  
  <p>Scenario:</p>
  
  <ol>
  <li>Fresh Windows 10 installation with updates.</li>
  <li>Installed Visual Studio 2015 with Xamarin development features.</li>
  <li>Updated Xamarin in Tools, Options, Xamarin, Check Updates...</li>
  <li>Checked to make sure Android SDKs are installed.</li>
  <li>Set Droid project to build &amp; deploy in config manager as well as the Portable library (build only).</li>
  <li>Build just hangs..................</li>
  </ol>
  
  <p>Tried other suggestions:</p>
  
  <ol>
  <li><p>Delete obj, bin, and Xamarin zip folders...restart, clean, rebuild.</p></li>
  <li><p>Updating Xamarin.Forms to version v2.3.1.114 (tried 2.2 first). Then updating Xamarin.Android.* to versions v23.3.0 (tried version with 2.2. first)</p></li>
  <li><p>Linking Xamarin.Android .dlls manually.</p></li>
  <li><p>Downloading android_m2repository_r29.zip or other zips as suggested in other posts and extracting manually to Xamarin folders.</p></li>
  <li><p>Deleted .vs folder and rebuilt</p></li>
  <li><p>Deleted temp and Xamarin folders in app data folder.</p></li>
  </ol>
  
  <p><strong>Xamarin Error Log</strong> </p>
  
  <p><strong>Xamarin.VisualStudio.Forms.Intellisense.ProjectTypeResolver Error: 0 : [2016-08-31 14:37:37.5635] An error occurred searching types for the given assembly
  System.InvalidCastException: Unable to cast COM object of type 'System.__ComObject' to interface type 'Microsoft.MetadataReader.IMetadataTables'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{D8F579AB-402D-4B8E-82D9-5D63B1065C68}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).</strong></p>
  
  <p>So nothing works...Why can't I build this project?  It just hangs every time.</p>