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Exchange 2010 upgrade

We are in the process of an Exchange 2010 upgrade and I'm starting move migrate mailboxes from our Exchange 2003 servers to the new Exchange 2010 servers.  I have a couple of questions regarding Outlook Web App (formerly Outlook Web Access).

1. When a user on Exchange 2010 tried viewing the calendar of a user on Exchange 2003, all they see is "Busy" or "Away" for apointments/events.  If they view the calendar of someone else that is on Exchange 2010 they can see what the appointment or event is.

2. I am unable to book a resource

I do not have the issues above when using Outlook on any computer.  The issue only comes up when using Outlook Web App.  Any suggestions?  Thanks!
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jmerulla
Asked:
jmerulla
1 Solution
 
RadweldCommented:
When transitioning your supposed to direct all owa to the exchange 2010 client access server then configure a legacy URL back to exchange 2003 this because exchange 2010 cannot correctly render mailboxes still on exchange 2003 and vice versa.

Did you configure a legacy URL?  

http://blogs.technet.com/b/exchange/archive/2009/11/20/3408856.aspx
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adiloadiloCommented:
also check EWS permission on IIS
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jmerullaAuthor Commented:
We did not do the legacy URL :-(
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