I removed Sharepoint from the FIM service (don’t do this!) and then I wanted to remove FIM service. The uninstall just kept failing. And it would not allow you to install as well. Its looking for the Portal parts. So I had to do manual cleanup (Risky). I did a complete remove of MIM, this was Dev and early stages so I could afford that.
- Delete the FIM service and portal folders
- Delete the FIM service database
- Delete MIM references in the registry, search for the text “Service and Portal”. Including remove from the uninstall list, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall.
Reboot and you should be good.
tlktechidentitythoughts 
Hi Ike, could you please share the references that you had to remove in the regedit? I am facing the same issue – cannot install and uninstall. Please!
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Many thanks for the guidance.
One more thought:
Don’t forget to remove the service beforehand: sc delete “FIMService”
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Hi I want to delete MA but it stucks on deleting window. i have already followed https://social.technet.microsoft.com/Forums/en-US/96cc60ec-baab-4e0f-be3d-609518f4c042/unable-to-delete-management-agents?forum=ilm2
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seen that a few times. database corruption? try restarting the SQL server. There could also be some corrupt records in the CS in which case its a long story to track them down and clean up.That’s where lithnet-miis PS is useful.
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