FIM Sync error

I had an implementation which had a FIM Sync problem that it would find all the AD objects that it needed to find, but the user profile sync wouldn’t create the profiles, which remained at 0. In the ULS logs you may see something along the lines of “Unsupported Method”, going to the UIShell of the sync service in “C:\Program Files\Microsoft Office Servers\Synchronization Service\15.0\UIShell\miisclient.exe” you may see the error “stopped-extension-dll-load“, but there is no additional information about it. In your event viewer you may find:

The management agent “MOSS-UserProfile” failed on run profile “MOSS_EXPORT_GUID”. The run step stopped because a configured extension for this management agent could not be loaded.

User Action
Verify that the extension is located in the Extensions directory. If the extension is present, confirm that the version of the .NET framework that can run the extension is installed on the server and that a supportedRuntimes entry in the configuration files specifies that version. The synchronization engine will not be able to load an extension that is built with a newer version of the .NET framework than the version of the .NET runtime it is hosting.

Turns out that this is somehow due to the supported runtime being commented out in miisserver.exe.config

<startup useLegacyV2RuntimeActivationPolicy=”true”>
<!– <supportedRuntime version=”v4.0.30319″></supportedRuntime> –>
<supportedRuntime version=”v2.0.50727″></supportedRuntime>
</startup>

Delete uncomment the line to make it look like this:

<startup useLegacyV2RuntimeActivationPolicy=”true”>
<supportedRuntime version=”v4.0.30319″></supportedRuntime>
<supportedRuntime version=”v2.0.50727″></supportedRuntime>
</startup>

Restart the server that hosts the Sync Service. You can find out by going to CA -> Manage Service Applications -> Highlight User Profile Service -> Properties

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