When I click on the E-Contents, a message 'Only available on IE.' appears and cannot watch the content.
Check the 'estream' setting of the content.
It is an option to select when you register a content in a format called eStream.
If it is set to 'estream - Yes', the above message appears and you can watch it only on Internet Explorer(IE).
You can change the setting to 'estream - No' if the content is not for Internet Explorer(IE) only.