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Exchange2010 – OAB/Outlook clients not downloading updated OAB


  • Outlook on Cache mode not updating..Disabling Cached mode on client manually fixes the problem.
  • OWA is not affected at all. All changes are instantly reflected in OWA.
  • Deleteing the .oab files in the user app data folder fixes the problem

This is not  a solution to this issue.

Create new OAB and perform the following tasks:

  1. Create new OAB from EMC.
  2. Make sure Web based and Public Folder distribution is enabled.
  3. Restart MS Exchange System Attendant and File Distribution Service.
  4. Update the OAB from EMC and Set it As Default.
  5. Associate the new OAB to Mailbox Database.
  6. Check the location for the .LZX files C:\Program Files\Microsoft\Exchange Server\V14\ExchangeOAB
    and C:\program files\Microsoft\Exchange Server\V14\ClientAccess\OAB\
  7. Make sure you don’t have web.config file @ .LZX file location.
  8. I hope you are doing full download of the OAB in Outlook.
  9. When you download the OAB, Make sure you uncheck the box“Download changes since last send/recieve”
  10. “Global Address Book” is the only option
After you restart the File Distribution Service on the CAS server, you should be getting the same files from the OAB generating server to the C:\program files\Microsoft\Exchange Server\V14\ClientAccess\OAB\ on the CAS server . You might want to set the logging level to high to see if any errors are generated on the OAB generating server.
  • Set-EventLogLevel –Identity LABMBX\MSExchangeSA\* -Level High 
  • Set-EventLogLevel –Identity “LABCASHT\MSExchangeFDS\*” -Level High
 the first one will get the OAB events and the 2nd will get the File Distribution Service events. Dont forget to set the logging back to defaults. After setting the logging, regenerate the OAB and then restart the FDS, check for errors in the corresponding event logs.
Wait for 24hours to get the replication

USEFUL links

  • How to troubleshoot the OAB Generation here
  • How Exchange 2007 OAB Files are replicated to a Client Access Server for download…Click here
  • Managing Offline Address Books…Click here
  • Understanding why error code 0X8004010F is thrown when trying to download an OAB..Click here
  • Outlook client OAB download process..Click here
  • Administering the offline address book in Outlook 2003 and Outlook 2007…Click here

April 25, 2012 Posted by | Exchange server 2010, Microsoft, OAB, Public Folder, Software | , , , , , | Leave a comment


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