I failed to log in to TDM Portal using the initial username and password. Even though we gave correct username password details, authentication is failing with an error "Invalid Username/password"
Go through the startup.log file from TDM portal logs. If you see an error as Illegal argument exception, authentication will fail.
Component :TDM Portal
Please change the ARD hostname details in application.properties file by removing special characters and then restart the portal service.