For some context, I have an ePO on another network configured for certificate authentication and there are no issues with login.
This ePO prompts for the certificate in the browser and then sometimes is it passed through and you can log in with certificate and sometimes it goes to the username/password screen. I cannot figure out why this is happening. I have checked the audit logs in the reporting tab and there is no record of the certificate log in attempt. I have reconfigured the certificate authentication and re-imported the CA certificates. I haven't found any logs on the ePO that indicate what the error could be.
Any ideas on how to troubleshoot this issue?