Symptom
ASDM Launcher fails to connect to ASA and stuck into the following message "Contacting the device. Please wait..."
Conditions
ASDM Launcher is version 1.5(53) that is bundled on latest ASDM 6.4.5 interim release. e.g. 6.4.5.204 and 6.4.5.205
Workaround
Remove "aaa authentication http console local" if possible - Or launch ASDM via https from the browser
Resolution
This behavior is identified as a bug CSCtt45397. Please upgrade the ASDM to 6.4(5.206) or above.