Exchange 2010 blank OAB
Users might get a blank OAB/GAL in Outlook with exchange 2010. It took me a week to figure this out since there was no traces found on the internet.
Error message:
Exception Exception type: System.NullReferenceException
Exception message: Object reference not set to an instance of an object.
This is how I resolved it:
1. Install support tools and open ADSIEDIT
2. Expand the Configuration container and navigate to this location–Exchange–Organization name
4. Go to the properties of organization name
5. Double click on the attribute: MSExchResourceAddressLists
6. Here, we are looking for an entry which has deleted items in it. This would be an address list entry which was not deleted properly. In my case, it was:
CN=Printer mailboxes\0BAFAB:3a62e7b2-32c2-513a-c2c3-2bbd316324fc,CN=Deleted Objects,CN=Configuration,DC=Ratish,DC=Main,DC=com
7. Delete this entry, restart your IIS and confirm.
Meera
August 25th, 2010 at 12:40 pm
You just saved me for many hours !!!!
after migrating from Exchange 2007 to Exchange 2010
Thanks – worked
October 12th, 2010 at 10:16 am
Excellent, spot on fix for my Exchange 2010 system.
I tidied up the Address Lists in 2003 as they didn’t want to migrate to 2010 and deleted one in the process of cleanup (on purpose). OWA in 2010 GAL then failed with your exact error.
This fixed it!
Many Many Thanks.
October 12th, 2010 at 11:26 am
Im glad it worked…. Cheers !!!
October 21st, 2010 at 6:43 am
Amazing. Google showed me your website. Do you know what caused this issue?
October 21st, 2010 at 5:10 pm
Great fix. Do I have to make any further change or just leave it like the way it is? Thanks again.
October 23rd, 2010 at 3:17 am
You are a true life saver… I wonder why microsoft dont write a kb for this issue….
October 23rd, 2010 at 7:32 pm
Thank you so much guys. This worked for me.
October 29th, 2010 at 8:48 am
This never solved my issue. Im still troubleshooting.
October 29th, 2010 at 12:34 pm
MSExchangeguru – you guys are the best ! This fixed my issue in 5 minutes and I coulnt thank enough! Awesome work
A
October 29th, 2010 at 11:45 pm
Great fix. this worked for me. Thanks a lot
December 6th, 2010 at 11:47 am
Great fix. this worked for me. Thanks a lot
December 29th, 2010 at 3:40 am
Simply awesome solution… worked like a charm !!!
April 10th, 2011 at 11:34 pm
Had this issue after an Exchange 2003 to 2010 Migration. Tried this fix and it worked.
Thanks!
October 3rd, 2011 at 2:44 pm
LIfesaver!!
October 11th, 2011 at 6:46 am
Very smart fix. Thanks a lot
September 11th, 2012 at 1:41 pm
Thank you very much!
May 9th, 2013 at 5:30 pm
Kudos,
This fixed my issue.
June 4th, 2013 at 4:18 pm
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