title: Visual studio 2015 project missing all references
body: <p>Starting from today, a WPF project that belongs to a solution with 20 projects, set all my references to missing</p>
  <p><a href="https://i.stack.imgur.com/BcnyQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/BcnyQ.png" alt="enter image description here" /></a></p>
  <p>I've just checked the MS suggestion and the other answers on Stackoverflow but none worked...I've tried to re-get solution from SVN, with no luck, other colleagues haven't got this problem.
  I've also tried to remove and re-add the references (System.Xml for example) .
  But no way to make it work...</p>
  <p>Any suggestion?
  Thanks</p>
  <h1>UPDATE #1</h1>
  <p>Here's the csproj</p>
  <pre><code> &lt;ItemGroup&gt;
  &lt;Reference Include=&quot;Catel.Core, Version=4.2.0.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.Core.4.2.0\lib\net40\Catel.Core.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Catel.Extensions.Controls, Version=4.2.0.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.Extensions.Controls.4.2.0\lib\net40\Catel.Extensions.Controls.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Catel.Extensions.FluentValidation, Version=4.2.0.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.Extensions.FluentValidation.4.2.0\lib\net40\Catel.Extensions.FluentValidation.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Catel.Fody.Attributes, Version=2.8.0.0, Culture=neutral, PublicKeyToken=1c8163524cbe02e6, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.Fody.2.8.0\lib\portable-net4+sl4+wp7+win8+wpa81+MonoAndroid14+MonoTouch40\Catel.Fody.Attributes.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Catel.MVVM, Version=4.2.0.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.MVVM.4.2.0\lib\net40\Catel.MVVM.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;MethodTimer, Version=1.15.7.0, Culture=neutral, PublicKeyToken=cb1364609f40a1dc, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\MethodTimer.Fody.1.15.7.0\Lib\portable-net4+sl5+wp8+win8+wpa81+MonoAndroid16+MonoTouch40\MethodTimer.dll&lt;/HintPath&gt;
    &lt;Private&gt;False&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Microsoft.Threading.Tasks.Extensions, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Microsoft.Threading.Tasks.Extensions.Desktop, Version=1.0.168.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.Async.1.0.168\lib\net40\Microsoft.Threading.Tasks.Extensions.Desktop.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;PresentationCore&quot; /&gt;
  &lt;Reference Include=&quot;PresentationFramework&quot; /&gt;
  &lt;Reference Include=&quot;ServiceStack&quot;&gt;
    &lt;HintPath&gt;..\packages\ServiceStack.4.0.46\lib\net40\ServiceStack.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;ServiceStack.Client, Version=4.0.46.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\ServiceStack.Client.4.0.46\lib\net40\ServiceStack.Client.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;ServiceStack.Common&quot;&gt;
    &lt;HintPath&gt;..\packages\ServiceStack.Common.4.0.46\lib\net40\ServiceStack.Common.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;ServiceStack.Interfaces, Version=4.0.0.0, Culture=neutral, PublicKeyToken=e06fbc6124f57c43, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\ServiceStack.Interfaces.4.0.46\lib\portable-wp80+sl5+net40+win8+monotouch+monoandroid+xamarin.ios10\ServiceStack.Interfaces.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;ServiceStack.Text, Version=4.0.46.0, Culture=neutral, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\ServiceStack.Text.4.0.46\lib\net40\ServiceStack.Text.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;System&quot; /&gt;
  &lt;Reference Include=&quot;System.ComponentModel.DataAnnotations&quot; /&gt;
  &lt;Reference Include=&quot;System.Configuration&quot; /&gt;
  &lt;Reference Include=&quot;System.Core&quot; /&gt;
  &lt;Reference Include=&quot;System.IO, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.1.1.10\lib\net40\System.IO.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;System.Management&quot; /&gt;
  &lt;Reference Include=&quot;System.Net&quot; /&gt;
  &lt;Reference Include=&quot;System.Runtime, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.1.1.10\lib\net40\System.Runtime.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;System.Threading.Tasks, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Microsoft.Bcl.1.1.10\lib\net40\System.Threading.Tasks.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;System.Windows.Interactivity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Catel.MVVM.4.2.0\lib\net40\System.Windows.Interactivity.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;System.Xaml&quot; /&gt;
  &lt;Reference Include=&quot;System.Xml.Linq&quot; /&gt;
  &lt;Reference Include=&quot;System.Data.DataSetExtensions&quot; /&gt;
  &lt;Reference Include=&quot;Microsoft.CSharp&quot; /&gt;
  &lt;Reference Include=&quot;System.Data&quot; /&gt;
  &lt;Reference Include=&quot;System.Net.Http&quot; /&gt;
  &lt;Reference Include=&quot;System.Xml&quot; /&gt;
  &lt;Reference Include=&quot;Telerik.Windows.Controls, Version=2015.2.728.40, Culture=neutral, PublicKeyToken=5803cfa389c90ce7, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Telerik.Windows.Controls.for.Wpf.40.Xaml.2015.2.728\lib\net40\Telerik.Windows.Controls.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Telerik.Windows.Controls.GridView, Version=2015.2.728.40, Culture=neutral, PublicKeyToken=5803cfa389c90ce7, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Telerik.Windows.Controls.GridView.for.Wpf.40.Xaml.2015.2.728\lib\net40\Telerik.Windows.Controls.GridView.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Telerik.Windows.Controls.Input, Version=2015.2.728.40, Culture=neutral, PublicKeyToken=5803cfa389c90ce7, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Telerik.Windows.Controls.Input.for.Wpf.40.Xaml.2015.2.728\lib\net40\Telerik.Windows.Controls.Input.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Telerik.Windows.Controls.Navigation, Version=2015.2.728.40, Culture=neutral, PublicKeyToken=5803cfa389c90ce7, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Telerik.Windows.Controls.Navigation.for.Wpf.40.Xaml.2015.2.728\lib\net40\Telerik.Windows.Controls.Navigation.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;Telerik.Windows.Data, Version=2015.2.728.40, Culture=neutral, PublicKeyToken=5803cfa389c90ce7, processorArchitecture=MSIL&quot;&gt;
    &lt;HintPath&gt;..\packages\Telerik.Windows.Data.for.Wpf.40.Xaml.2015.2.728\lib\net40\Telerik.Windows.Data.dll&lt;/HintPath&gt;
    &lt;Private&gt;True&lt;/Private&gt;
  &lt;/Reference&gt;
  &lt;Reference Include=&quot;UIAutomationProvider&quot; /&gt;
  &lt;Reference Include=&quot;UIAutomationTypes&quot; /&gt;
  &lt;Reference Include=&quot;WindowsBase&quot; /&gt;
  </code></pre>
    
  <p>Yes I use Nuget, the other 19 points to the same assemblies ...nothing has been moved</p>
  <h1>UPDATE #2</h1>
  <p>Since I was not able to proceed I've copied the project from a colleague and now it works.... think something went wrong in the filesystem...have compared the solution and they were identical</p>