Dynamics AX 2012 : Could not retrieve a valid Windows identity

L’installation échouait lors de l’installation de Dynamics AX 2012 R3 sur SharePoint 2013 SP1. Le message d’erreur suivant était présent dans le fichier de log.

EP Installation Failed

Server was unable to process request. ---> Could not retrieve a valid Windows identity. ---> The message could not be dispatched because the service at the endpoint address 'net.pipe://localhost/s4u/022694f3-9fbd-422b-b4b2-312e25dae2a2' is unavailable for the protocol of the address.


Installation completed successfully, but Setup could not create the Enterprise Portal website. You can create the website by running Setup and installing Enterprise Portal again. You can also manually create a website using SharePoint Central Administration.
An error occurred during setup of Enterprise Portal (EP).
Reason: Exception has been thrown by the target of an invocation.

J’ai trouvé la solution sur cette page : http://technet.microsoft.com/en-us/library/dn169057.aspx

Il faut démarrer le service Claims to Windows Token Service de SharePoint et ensuite installer Enterprise Portal.

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