I have recently been working on upgrading our current enviroments (sandbox/dev/qa/prod) from 11g to 12c.
I have successfully migrated our enviroments for sandox/dev and QA but our PROD enviroment seems to be giving me some problems
I followed the exact same steps from the previous enviroments, the same as our PROD enviroment.
But when I try to log into our Administration tool I get an error saying
"Login Failed"

There is no error codes that I can see.
Prior to migrating the 11g jar file to 12c - On a fresh 12c install I was able to log into the admin tool (although it was blank) but I was still able to log in regardless. Only AFTER migrating the 11g jar file to 12c I hit the error with the admin tool.
I am able to log in to enterprise manager, weblogic console, analytics, basically everywhere else BUT the admin tool (I have not tried the catalog).
I have tried to uninstall, and reinstall my 12c application as I thought something in my install may have been faulty. But I confirmed on a fresh install I was able to log in to the admin tool. It was only AFTER migrating was I not able to log in to the RPD.
I am using a Windows 7 64 bit desktop client tool.
When I test/connect to my PROD enviroment I have no issues


I am also able to log in to the RPD in offline mode.
It is ONLY in ONLINE mode I can not log into the RPD with the "Logon Failed"
I am 99% sure my userid/password are correct, as when I intentionally try to put in an incorrect password it gives me a totally different error.
Has anyone at all seen this?
I am at my wits end on this one now....