Updating cached headers outlook 2016
You can also specify that updates to the Address Book be downloaded during synchronization.
To allow you to work with your messages even when you cannot connect to the mail server, a second type of data file that is named an Offline Outlook Data File (.ost) is kept on your computer.Most of the reasons to work offline are eliminated when you use Cached Exchange Mode.The lack of a network connection is almost transparent to you because you can continue to work with your items whether you are connected to the computer that is running Exchange.About: There are two types of Outlook data files used by Outlook for Windows.An Outlook Data File (.pst) is used for most accounts.They contain such boring information as which server picked the message up from which other server at which time.
While not particularly interesting normally, this information is required to identify the true origin of an email message, in particular of spam.
When you connect Outlook with either IMAP or POP3, you should have Outlook set up to download the complete message (instead of just the header).
If you do this, Outlook won't have to sync with the server every time you click on a new item (as it will already be in the data file.) How you do this will depend upon which version of Outlook you're using.
When your connection to the Exchange computer is interrupted, you can continue to work with your data.
When a connection is restored, changes are automatically synchronized, and the folders and items on the server and on your computer are identical again.
And none of these techniques requires a single configuration change to your Exchange server (IMAP or POP3).