When migrating mailboxes you may see a Transient error StorageTransientException has occurred, this is because the mailbox is poisoned and quarantined.
After installing office 2013 you cannot launch Office 2013 as there are no icons to run applications, this can be fixed by removing some reg keys and reinstalling.
If you have Exchange 2013 installed on Server 2012 then when you manage Exchange 2013 with Internet Explorer 10 then it crashes constantly. A patch is now available to fix.
When printing from Office 2013 to a HP Laserjet Word,Excel,Powerpoint 2013 will hang with Windows Host Process (Rundll32) Not Responding. We need to scrub the driver