Key: Note: As Outlook 2010 an Outlook 2013 can connect to multiple Exchange servers in a single mail profile, there is an additional “Offline Address Books” subdirectory which contains folders with GUID references which contain the actual oab-files.
Finding out which GUID represents which mail account isn’t very straightforward but looking at the “Date modified” value of the folder should give you a good indication if you don’t want to simply delete all folders or rename them to
Full OAB download threshold To modify the threshold at which Outlook will download the full OAB rather than the incremental update, you can set the following Registry value Key: As the value, set at which relative size a full OAB download should take place rather than an incremental update.
For instance, setting the value to 4 will trigger a full download when the incremental update is larger than one-fourth the size of the full OAB.
Recovering a user’s auto-complete list can be done at the same time as their Exchange migration or even if they were previously migrated.
Before migration (if the user has been migrated previously skip steps 2, 3, and 4 as they will probably have already typed enough email addresses to create the new Exchange auto-complete file and make sure that Outlook is CLOSED before proceeding): Mon - Fri: 8am to 8pm 204-474-8600 or Walk-In: Fort Garry 123 Fletcher Argue Mon - Fri: 8am to 8pm Bannatyne 230 Neil John Maclean Library Mon - Fri: 8am to pm New!
In a later section, it is explained how to modify this.
There are various Registry settings available to control or modify the update and download behavior of the Offline Address Book in Outlook.
Microsoft Outlook keeps a list of recently used email addresses that you've typed in the To:, Cc:, and Bcc: fields.
You can back up or copy that file elsewhere if you want to keep the list or use it on a different computer.
You’ll find the following 6 oab-files in this location which make up the full Offline Address Book: If you are still using Outlook 2002/XP or previous, the file names won’t have a “u” in front of their name.