Thanks Marvin for your response; the issue got resolved, actually the update on the FMC from 6.0 to 6.2 took a longer duration than a usual update and was running backend, I tried to re-login to the GUI after 1hour from my post here, and it just work...

Hi Jetsy, I lost the access to the web interface after updating the FMC to Version 6.0 but able to access it via ssh.I doubt its the issue with "Update Management Center HTTPS Certificates before upgrade of Version 6.0" Can I have a command line synt...