Your Out of Office settings cannot be displayed, because the server is currently unavailable. Try again later

Issue
==================
Users from Outlook 2010, unable to set OOF, no issues from OWA

"Your Out of Office settings cannot be displayed, because the server is currently unavailable. Try again later"

Environment
=======================
Exchange server 2010 Sp2
Outlook 2007 


Troubleshooting steps
======================
1. Check for Address book service to ensure that connectivity for Autodiscover is fine 
2. Check for Autodiscover status from Outlook machine. Click on URL to check "Test Connectivity"
3. On Exchange server, Check Autodiscover Virtual Directory
It can be check from EMC or EMS 

Get-AutodiscoveryVirtualDirectory -id "Autodiscover (Default Web Site)" | FL *URL*
and check for both InternalURL and ExternalURL




For reference, Autodiscover FQDN URL are listed as below. Outlook Client will try to Access URLs from Internet in following order

• https://domainname.com/autodiscover/autodiscover.xml
• https://autodiscover.domainname.com/autodiscover/autodiscover.xml

To Set the Autodiscover from Exchange server

Ran the below commands on the server:
Set-ClientAccessServer -Identity CAS_Server_Name -AutodiscoverServiceInternalUri https://mail.domainname.com/autodiscover/autodiscover.xml

Set-WebServicesVirtualDirectory -Identity "CAS_Server_Name\EWS (Default Web Site)" -InternalUrl https://mail.domainname.com/ews/exchange.asmx

Set-OABVirtualDirectory -Identity "CAS_Server_name\oab (Default Web Site)" -InternalUrl https://mail.domainname.com/oab