Configuring the Lithnet REST API for the FIM/MIM Service post MIM Version 4.4.x.x

Last year I wrote this post on installing and configuring the Lithnet REST API for the FIM/MIM Service and integrating it with Azure API Management.

This week on a fresh installation of Microsoft Identity Manager with SP1 I was installing the Lithnet REST API for the FIM/MIM Service and was getting errors from the WCF Web Service finding the correct version of the Microsoft.ResourceManagement.dll.

After a little troubleshooting and no progress I recalled Kent Nordström posting the following tweet last month.

Looking back at my own environment the version of the Microsoft.ResourceManagement.dll that was installed in the product directory C:\Program Files\Microsoft Forefront Identity Manager\2010\Synchronization Service\Bin was version 4.5.285.0. A different version to what Kent had.

Looking for the Microsoft.ResourceManagement.dll under c:\windows\assembly\gac_msil\Microsoft.ResourceManagement the version that was on my installation was 4.4.1302.0.

Updating the Lithnet REST API for FIM/MIM Service web.config as detailed in my previous post on the Lithnet REST API for FIM/MIM Service therefore needed to reference 4.4.1302.0. After making that change everything worked as expected.

Summary

Big thanks to Kent for saving me hours of fault finding. If you are on MIM version 4.4.x.x or later keep in mind that the version of the Microsoft.ResourceManagement.dll located in the product installation directory ( C:\Program Files\Microsoft Forefront Identity Manager\2010\Synchronization Service\Bin ) differs from the version of the file that the installation puts in the GAC.

Also if you then subsequently update your Microsoft Identity Manager installation (maybe because of this obscure reason), don’t forget to then go back and update the Lithnet REST API for the FIM/MIM Service web.config to reflect the latest version of the Microsoft.ResourceManagement.dll.