title: Xamarin - Adding custom entitlements.plist causes build error MessagingRemoteException
body: <p>I am running on visual studio 2015. I have linked my visual studio to the mac. iOS 10.1. Xamarin forms 2.3.2.127 in visual studio.</p>
  
  <p>I'm currently trying to fix a bug that was mentioned at <a href="https://stackoverflow.com/questions/39487368/xamarin-auth-store-keychain-not-working-after-ios10-upgrade">Xamarin Auth Store Keychain not working after ios10 upgrade</a>. When I try and add a custom entitlement as mentioned in the iOS Bundle Signing section, I now run into a build problem which states the message below. Soon as I remove the custom entitlement, it will build fine.</p>
  
  <p><em>MessagingRemoteException: An error occured on client Build42164 while executing a reply for topic xvs/Build/4.2.1.64/execute-task/Snap.iOS/9bfff3a%2FDetectSigningIdentity
  DirectoryNotFoundException: Directory [DIRECTORY] not found.</em>   </p>
  
  <p>Any ideas?</p>