His solution addressed it for me.
MIM Portal Unable to Process your request
Hi experts, MIM Portal stopped working after reboot and SharePoint 2016 Security Update installation. I am getting the below error since the reboot. ![29131-image.png][1] I tried to configure enabling detailed error pages using the link https://social.technet.microsoft.com/wiki/contents/articles/2278.how-to-configure-detailed-error-pages-for-the-fim-portal.aspx#Enable_Detailed_Error_Pages But No luck. This one seems to be a generic error. I m not able to figure out the exact error as it did no report any in the event viewer except this. ![29133-image.png][2] Any pointers would be appreciated. [1]: /api/attachments/29131-image.png?platform=QnA [2]: /api/attachments/29133-image.png?platform=QnA