I was using a full sync of my local AD. Later i changed this to use only the Users OU (due to some IDFix issues in other OUs) I noticed updates did not changed anything in my Office365 portal anymore. So i Checked my event viewer on the domain controller and noticed some errors.
Failure while provisioning entries to Windows Azure Active Directory. More details at http://go.microsoft.com/fwlink/?LinkId=787121. Exception: Unexpected exception thrown.