I have a blackberry 8700 from rogers and my company uses a hosted exchange provider running BES. Because the exchange file on our hosted server does not contains all the same information as the pst file on my desktop I have needed to run the desktop sync. software. For some reason after I run that I always loose the exchange settings and get the above listed error. The only way that I have been able to fix it is to have the exchange administrator reset the enterprise activation for the message to work again. Any help would be appreciated.