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MS Exchange 2010 - Offline Address Book Won't Update

Posted on 2013-05-21
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Last Modified: 2013-05-27
I have a single MS Exchange 2010 server. This server was upgraded from an MS Exchange 2003 server about a year ago (not sure if that is relevant).

Well within the last month or so, the Offline Address Book quit updating.  

All of my clients are Cached clients (which I want to keep) and the offline address book will not update.  

The GAL is fine, because if you turn off caching or out OWA the address book is current.

I have found that if I blow away the OAB files manually on a client they pull down again and the address book is correct, however, I can't really go to 100 clients to do this, I also don't think it is then updating again after that.  

Can anyone help as to why this is happening?
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Question by:mfehrmann
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by:Amit
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In this case, there are two option, if you are taking OAB folder backup, restore the last good one. So, first check when ExchangeOAB folder was last update. Check the modified date, and restore the backup from one or two day older. Restart service on CAS server and OAB will be back to normal. And when user will open outlook again, it will be downloaded with latest update.
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by:Amit
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Second option you already mentioned.
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by:Manpreet SIngh Khatra
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I would say create a new OAB and update it and then link to MailboxDatabase and simply work your way possible OAB corruption i guess on the server

- Rancy
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by:ssk_2k3
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Have a check from outlook that corret GUID published for OAB URL. If so i would recommand please re-create the OAB to works well and also if you want to have troubleshoot with existing one please enable the debug logging for "OAL generator" under Ms Exchange SA with expert level to see if any events are created for this. ALso please check if you can see updated oab.xml with correct interval on mailboxOAB folder from generation server. If that folder is updated correctly please force restart file distribution service which will make CAS updated.
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mfehrmann earned 0 total points
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I figured out the issue. A few weeks back I had a new user that could not receive e-mail from the majority of my workstations.  Well the reason behind that was because she was deleted as a user in my Exchange 2003 environment, then re-created in Exchange 2010 a year later with the same username. Apparently there is an issue with legacy addresses that gets stored on cached client machines.  So in trying to solve that issue I had to try and re-create a legacy X500 address under her account. I think this is what caused the OAB to stop publishing out to clients. As soon as I removed these legacy addresses (that didn't work either way) from her account, the OAB started pulling down to clients.  
Still can't figure out why my users can't send her e-mail, but she is a temp worker and done in 8 days so I don't care enough.  
Thanks for the suggestions everyone, but I'm going to close this case.
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by:Amit
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Your question was different that's why you didn't get the right answer. However according to question we gave you the right answer.
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by:mfehrmann
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My problem was the Offline Address Book wasn't updating on my clients.

The solutions presented to me didn't solve this problem mostly because I had tried all of them prior to asking the question.

As I was waiting for a solution I hadn't already tried, I was attempting to fix the problem myself. I realized maybe the problem I was trying to address a few weeks back was related. I simply wanted to update the group with what solved the issue because I feel Experts Exchange is a great platform to search for solutions, and I wanted to list the full explanation as to how I came to that solution.

How did I not ask the correct question?
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by:mfehrmann
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I figured out the solution, none of the suggested solutions would have worked in this situation. I posted what I found, and what fixed the issue in case others run in to this...
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