Microsoft.IdentityModel required

Jul 22, 2011 at 4:19 PM


We are migrating to CCA R2 and when i try to run the Agent Desktop , it fails saying in line


new Uri(organizationServiceUrlString), null


{"Could not load file or assembly 'Microsoft.IdentityModel, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.":"Microsoft.IdentityModel, Version=, Culture=neutral, PublicKeyToken=31bf3856ad364e35"}

Is WIF a pre requisite for CCA R2. Our client machines are Windows Xp machines which does not support WIF.

Please advise.



Jul 24, 2011 at 7:43 AM


The following operating systems are supported for the Microsoft Dynamics CRM - CCA R2 : 

Windows XP with SP3, Windows Vista with SP2, Windows 7, Windows 7 with SP1, , or Windows Server 2008 with SP2 (32-bit or 64-bit)

The following must be installed on each client computer:

.NET Framework 4.0 or later 

Windows Identity Foundation (WIF) framework – WIF is required for externalizing user access from applications via claims.



Jul 25, 2011 at 9:48 AM

Thanks Senthil. However WIF cant be installed on Windows Xp SP3. And hence need to understand how CCA R2 is considered supported in Windows XP.