We are currently migrating from Exchange 2010 to Exchange 2013. I have done a few test users and all seems to be working fine accept for Free/Busy information.
If you are still on Exchange 2010 you can see all the other Exchange 2010 users' free/busy.
If you are on Exchange 2013 you can see all users free/busy on 2013 AND 2010.
If you are still on Exchange 2010 you CANNOT see Exchange 2013 users' Free/Busy.
As we move more users over to 2013 this is going to become a problem as our users create loads of meetings and need to be able to see the free/busy time.
Have I missed something or is there an issue with this scenario?
Thanks for any help.