Oracle 12c - Can not login to Enterprise Manager - XDB Login prompt I have installed Oracle 12c Standard Edition on one of my Windows 7 LAN desktops. Installation went fine. I created ORCL Container and ORCLPDB pluggable database during install. I can log in to Oracle SQLPLUS using SYS &amp; SYSTEM passwords.

I can as well login to Oracle Web Enterprise Manager (It runs on https://(hostname):5500/em ) using SYS &amp; SYSTEM passwords without specifying any database. However in case of Web Enterprise Manager the moment I choose a database container (See the screenshot, left side login prompt) despite entering correct userid/password it prompts for yet another weblogin prompt. I am clueless what to enter here.

I tried SYS &amp; SYSTEM passwords but it did not help. During installation, it asked for an additional admin password that too does not work here. I also tried unlocking XDB &amp; Anonymous accounts and restarted Database &amp; listener but it did not help. tnsnames.ora has entries for both ORCL &amp; ORCLPDB.

Does anyone have any idea what this login is for and how to proceed further?

Thanks.
You should enable global port for EM Express to Manage a CDB and the PDBs, execute:

exec dbms_xdb_config.SetGlobalPortEnabled(TRUE)