Troubleshooting FIM: Failed to connect to specified database. The extension operation aborted due to an internal error in FIM Synchronization Service

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Issue

When attempting to create the FIM Service Management Agent we see an error on the 'Connect to Database' section of the MA configuration.

https://microsoft.sharepoint.com/teams/iamsupport/iamblog/SiteAssets/extension_operation_1.png 

Resolution

 Swapping the supportedRuntime lines in the miiserver.exe.config resolved the issue. 

<startup useLegacyV2RuntimeActivationPolicy="true">

     <supportedRuntime version="2.0.50727"></supportedRuntime>

     <supportedRuntime version="v4.0"</supportedRuntime>

</startup>