Favorites disapear from Outlook

Since I was asked in answers.microsoft.com to post here (Exchange Environment), and I dont find exactly the same question I will just add the links where I and others asked before at Microsoft community:

ms_forum1

http://answers.microsoft.com/en-us/office/forum/office_365hp-outlook/inbox-sent-and-other-folders-disappearing-from/54d81e04-0246-4665-95f5-d73bab9b0353?rtAction=1420814049531


ms_forum2


http://answers.microsoft.com/en-us/office/forum/office_365hp-outlook/favorites-disappear-from-outlook-office-365/4c6fd901-a4c3-4089-8107-4f23e6ed769c

hopefully some one serious take that.

Thanks in advance

Hugo