AX2012 Help Server - no results

Hi,

I am installing a testing environment. The case I am facing right now is:

- Help server works for majority of the domain user accounts
- For one account (who has local admin/domain admin rights), the "content" in the help viewer is empty and all searches return no results
-  In the event viewer there is no error messages

Anyone have faced this issue before?  

Tried (but didn't help):
1)  Look at registry HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
the value for key "Start_SearchFiles" is 1.

2) Rebuilt user profile. (By delete existing profile -> login)

Any idea?

Thanks.