Does anyone have an idea why I cant view free busy data for Ex2013 and Ex2010 mailboxes when I'm creating appointments? This happens only for Exchange 2013 mailboxes, not being able to view anyone's free busy data. Ex2010 users can view Ex2013 free bu

Hi

with intra-org i guess cross forest?

Does it work in OWA?Have you configured this: https://technet.microsoft.com/en-us/library/bb125182%28v=exchg.150%29.aspx?f=255&MSPPError=-2147217396

It's all intr-forest, no cross forest scenario.  I tried OWA it's not able to pull free/busy even on my own mailbox. With the desktop Outlook I can at least view my own free busy, but OWA I cannot at all.

please run this Exchange powershell command:

Get-MailboxFolderPermission -Identity yourmail@domain.com:\calendar |fl

Which permission is listed?

Try to add permission to another user:

Add-MailboxFolderPermission -Identity yourmail@domain.com:\calendar -User anotheruser@domain.com -AccessRights AvailabilityOnly

I granted myself access to the other users. I have access to my own calendar. And it still does not show.

When I hover over the calendar of the other mailbox where the free busy data is not showing, the message states "Your server location could not be determined".

please run Test-OutlookWebServices |fl

Post any error message here.

Also CTRL+right click outlook icon near the clock and choose connection status,see if any are broken.Also do test e-mail autoconfiguration on same menu.

Which certificate has been set on your exchange 2013 server?3rd part or from root ca?