Default Global Address List and Global Address List

Need some help with GAL and OAB please

Using Exchange 2010 - Version 14.2 (Build 247.5)
Outlook 2010 Clients - Cache Mode setup

Client machines showing the within the "Select Names: Default Global Address List"  two drop downs that are listed as.

"Default Global Address List - person@domain.com"   (selected by outlook as default)
"Global Address List - person@domain.com"

I am having issues whereby when changing display names and adding users/mailboxes within AD the "Default Global Address List - person@domain.com" is not showing changes, having even waited a few days.

I have forced update on the OAB and restarted FDS service and then forced download of address book within outlook client.  Still doesn't help.

The "Global Address List - person@domain.com" when selected from the list is however reflecting the changes fine.

I suspect OAB is corrupt.  Having reviewed the OAB Tab area within Organisation Configuration under Mailbox I see two entries within this CAS server pointing and the MBX server.  One set to True and one set to False.


Questions

1) Why are there 2 Global Address Lists showing on the outlook 2010 client machines.  IS this standard in cached mode
2) Why are changes not being updated when forcing updates to the "Default Global Address List - person@domain.com"


Many thanks in advance
BJM
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BJMagillAsked:
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Andy MConnect With a Mentor Internal Systems ManagerCommented:
It should only be the web.config in OAB folder that needs changing, if that's not there then it sounds like it's another issue causing this.

You could try deleting the current OAB's and create a new one in Exchange, this should help if the existing OAB is corrupt.
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Andy MInternal Systems ManagerCommented:
If you log onto webmail does the changes made to the display names show up in there? (I.e. it only doesn't update on the Outlook clients?)

If so this is a permissions issue on the OAB directory.

The following link: http://blogs.technet.com/b/rmilne/archive/2012/08/10/solving-additional-issues-with-exchange-oab-download.aspx

Has details on sorting out this known permission issue - under "Invalid web.config file" heading.
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BJMagillAuthor Commented:
The display names show correctly on owa.
There is no web.config file in the folder noted in the documents.

I located web.config in ..\ClientAccess\PowerShell folder and added the Read-Execute permission then forced a download but still not updated.
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BJMagillAuthor Commented:
What are the steps to delete and re-create the OAB
Stop - Start services etc.. ?
Thank You
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