When you update an Offline Address Book on the Exchange server via the Exchange Management Console or the Exchange Management Shell, one would suspect that updating the Outlook client after that would directly get you this fully up-to-date copy. After the OAB gets updated on Exchange, it still needs to distributed to the web services first, even in a single server environment.

The process of updating and distributing the OAB is achieved by the following two schedules.

When the value is set to 0, Outlook will use 16 to prevent a “divide by 0” error.

outlook name cache file not updating-48

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!

Renaming just a single or some of the files will result in an OAB corruption. A benefit of manually deleting the oab-file is that before they are being re-downloaded, you are working with the Online Address Book.

When you find things working correctly for you now but not anymore after the oab-file were redownloaded, you know that the issue is with the oab-files on the server and not on the client or the Address Book configuration in general.

This means that in the worst possible scenario, an update to the Address Book won’t become available to the user until 48 hours after the change.

This situation however is extremely rare since the default maintenance time on Exchange is at AM and updates and downloads are usually performed during working hours.When you start to type an address in a new Outlook email message, a menu drops down listing addresses that you’ve sent a message to in the past – the “auto-complete” list.You can send most messages by typing a few letters of someone’s name and hitting the Enter key when the right choice appears.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.You’ll have to rename them all to or, in the case of Outlook 2010 or Outlook 2013, rename the folder containing the oab-files to to reset the local Offline Address Book.In a later section, it is explained how to modify this.