"The Offline Folder file cannot be used in this profile.
Your administrator has set a policy that allows you to use only those Offline
Folder file that provide great storage capacity and support multilingual
Unicode data."
That means your emails have been upgraded to the new
email server! (If you haven't received this error yet, it's likely that you
will soon--please DO NOT delete this email until you have made the change.)
Please follow the steps
Start Outlook 2003.
Click OK.
The OST file needs to be recreated. Either delete the
old one and recreate outlook.ost or rename the OST file.
Click OK.
Click Yes.
Now we need to get the new Offline Address Book (OAB).
In Outlook 2003, go to Tools > Send/Receive >
Download Address Book.