Account information not recognized: Could not reach CMS ‘hostname:6400’. Specify the correct host and port and check for network issues. (FWM 20030)
unable to connect to cluster to @hostname:6400 to retrieve updated CMS member list. Logon cannot continue
In my case I found disk space issue in BOBJ Installed drive. So I removed unnecessary files in BOBJ Installed drive. After I delete unnecessary files I have 20 GB free space in BOBJ Installed drive.
After that I restarted BOBJ services and I am able to login to CMC and CMS.
If you find any solution other than this please comment here.