Intellisense is not working in Microsoft SQL Server 2014, it was working fine in Microsoft SQL Server 2012 but once I installed 2014 it is not working.
Under Tools -> Options -> Text Editor -> Transact-SQL -> IntelliSense
it says it is enabled there.
I have also tried refeshing the IntelliSense cache with Ctrl-Shft-R but that doesn't work.
From my personal experience, SSMS IntelliSense is a pure crap, sometimes it works, sometimes it doesn't. I'd go for third party tools.
If you're willing to spend your cash, I'd recommend Redgate SQL Prompt.
If you need a free product, try dbForge SQL Complete, it's not as good as SQL Prompt, but does a decent job.
Perform following steps:
Under Edit -> IntelliSense -> Refresh Local Cache
Restart SSMS.Then try
After Refreshing local cache, if still not working, then try to delete temporary file of OS. for me it's work, I hope this will fix your's issue as well.