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Xamarin error - Could not load assembly 'Xamarin.Android.Support.v4'

After upgrading my Visual Studio to the latest version, I couldn’t compile my Xamarin project anymore. Instead I got the following error:

Severity    Code    Description    Project    File    Line    Suppression State
Error        Exception while loading assemblies: System.IO.FileNotFoundException: Could not load assembly 'Xamarin.Android.Support.v4, Version=1.0.0.0, Culture=neutral, PublicKeyToken='. Perhaps it doesn't exist in the Mono for Android profile?
File name: 'Xamarin.Android.Support.v4.dll'
   at Xamarin.Android.Tuner.DirectoryAssemblyResolver.Resolve(AssemblyNameReference reference, ReaderParameters parameters)
   at Xamarin.Android.Tasks.ResolveAssemblies.AddAssemblyReferences(ICollection`1 assemblies, AssemblyDefinition assembly, Boolean topLevel)
   at Xamarin.Android.Tasks.ResolveAssemblies.Execute()    App1.Droid    C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets    1316   

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Luckily it was fixed easily by updating the Xamarin.Android.Support.v4 NuGet package to the latest version.

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