Exchange synchronisation issues

Hi All,

We are using Microsoft office 365 and hosted exchange.

We consistently get the following errors.

Any ideas? ( i have replaced my actual domain with domain.com.au)

15:53:51 Synchronizer Version 15.0.4535
15:53:51 Synchronizing Mailbox 'My Account'
15:53:51 Synchronizing Hierarchy
15:53:53 Synchronizing local changes in folder 'Calendar'
15:53:53 Uploading to server '89c1ba02-8133-43f4-a977-4f51a3baa2ce@domain.com.au'
15:53:56          1 item(s) updated in online folder
15:53:56          1 view(s)/form(s) updated in online folder
15:53:56 Error synchronizing folder
15:53:56              [0-0]
15:53:58 Synchronizing server changes in folder 'Inbox'
15:53:58 Downloading from server '89c1ba02-8133-43f4-a977-4f51a3baa2ce@domain.com.au'
15:54:00 Synchronizing server changes in folder 'Deleted Items'
15:54:00 Downloading from server '89c1ba02-8133-43f4-a977-4f51a3baa2ce@domain.com.au'
15:54:01          1 item(s) updated in offline folder
15:54:02 Done
15:54:04 Microsoft Exchange offline address book
15:54:04       0X80190194

I am using windows 7