Wednesday, May 02, 2012 6:58 PM
I have several users that are still using Outlook 2003 and for one conference room and only one, they get a "Unable to open free/busy information. Unable to directly book a resource for this meeting"
We have many conference rooms and this only happens on one. People with Outlook 2007 and Outlook 2010 as well as OWA can book with no issues.
I have cleared out the cached GAL on the users PC's, run Outlook with /cleanfreebusy switch.
What else am I missing?
Friday, May 04, 2012 1:28 PMModerator
It appears the conference room is setup correctly, the issue might be caused by Public folder since Outlook 2003 retrieve free/busy information from it.
Is the problemaitc Outlook 2003 client's mailbox resided on Exchange server 2010? Where does the public folder points to?
Please verify the Application event log on the Mailbox server where the affected mailbox resided on and check if there is any error recorded.
Also check if there is public folder replication related issue.
Hope it is helpful.
TechNet Community Support
Friday, May 04, 2012 1:32 PM
Finally found the answer this morning. It seems that Outlook 2003 and 2007 where trying to do direct booking. I set the following registry key on both those sets of users and it started working again.
HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\options\Calendar\ EnableDirectBooking Dword 0 for 2007 and HKEY_CURRENT_USER\Software\Microsoft\Office\11.0\Outlook\options\Calendar\ EnableDirectBooking Dword 0 for 2003
I set this in a group policy, changed the mailbox permissions for default user to reviewer and voila!
- Marked As Answer by Fiona_LiaoMicrosoft Contingent Staff, Moderator Monday, May 21, 2012 10:51 AM