This file is also known as the offline data file which can be recognized easily when looking at the extension which is OST.
When you quit Outlook Windows Desktop Search won’t index the OST. Windows Desktop Search is that the requests will be processed locally instead of sending them to the Exchange Server.
If you choose to work in Online Mode make sure you are implementing Windows Desktop Search 4.0.
As mentioned earlier Outlook will use an Offline Address Book (OAB).
Initially a complete download is being performed of the address book.
When there is no connection this functions are not available.
If there is a connection with the Exchange Server it can happen that these functions are working slower then normally.
Impact of Cached Exchange Mode on Outlook functionalities Besides the earlier called scenarios there are some additional functionalities which are influenced when using Outlook in Cached Exchange Mode.
Below an overview of the functionalities: These functions require a connection to the Exchange environment.
If a user does make a change to the message it will be updated in the Information Store.
Because the properties of both messages are not the same this will result in conflicts.
Black Berry devices Cached Exchange Mode used i.c.w. The cause in most cases is that the mobile server will download the message after the message has been downloaded to the Outlook cache file.