Today I was working with one customer for the Outlook Free/Busy
information issue where I observed very interesting things, So I thought to
share with you for future references.
Issue: -
Not able to see
Free/Busy information for particular users.
Error Message: -
Issue Statement: -
Microsoft Introduced Calendar Assistance in Outlook 2003/2007/2010 and 2013
which will user to get the users free/busy information without access
permission of the users mailbox. When outlook opened it will utilize SCP
(Service Connection Point) by Autodiscover service to identify and validate
users and server information/settings to connect Mailbox server. Basically all
the client access servers will have Autodiscoverurl to propagate server
settings which is known as SCP by the EWS API.
When outlook connect Microsoft Exchange Client Access Server the first outlook
send the XML file which contained User Name, Password, Email address , AD Site
information’s to Client Access Server (Load balancer if you have HLB/NLB) then
CAS Server transfer the connections status to “Connection Manager” which will
validate given information with Global Catalog servers, Based on response
connection manager will respond to CAS server then CAS server allow clients to
connects with Mailbox server.
When we requesting for Free/Busy information CAS server will communicate with
Mailbox servers by utilizing SCP connections with the following phases,
3. SRV - autodiscover.learnexchange.com
AutoDiscoverServiceClassName :
ms-Exchange-AutoDiscover-Service
AutoDiscoverServiceInternalUri : https://autodiscover.learnexchange.com/autodiscover/autodiscover.xml
AutoDiscoverServiceGuid
: 77378f46-2c66-4aa9-a6a6-3e7a48b19596
AutoDiscoverSiteScope
: {Exchange-A}
Following diagram illustrates SCP Lookup Phases,
In our cause Autodiscover return proper response with status 200
by running the “Test E-Mail AutoConfiguration” but am not receiving user
free/busy information, I just quite curious to know the reason, than I checked
the same by login to Webmail and Outlook Online Mode both showing the same
result L.
Where is the issue? I recalled the outlook command switch that
“Outlook /Cleanfreebusy” will clear the outlook corrupted free/busy cache, I
ran the same command but still I was not able to see the particular user
free/busy information.
I am literally pulling out my hair ^o) ^o), Finally I went to
Exchange Command Shell to get the Calendar Permission and Testing the
Autodiscover of the particular user,
Autodiscover Test: - I ran the Test-OutlookWebServices command and got Successful
result.
Test-OutlookWebServices -TargetAddress "terrikarsten@learnexchange.com"
|fl
Id : 1122
Type : Success
Message : Autodiscover was tested successfully.
Gathering Calendar Permission: - I ran the
Get-MailboxFolderPermission against Calendar Folder and found Access Permission
set as “None”.
Get-MailboxFolderPermission -Identity terrikarsten@learnexchange.com:\calendar
FolderName : Calendar
User : Default
AccessRights : {None}
Identity : Default
IsValid : True
Which is not the default settings of Calendar for the regular
mailboxes by default set in place of “AvailabilityOnly”.
Resolution: -
As we see above diagnose shows that Calendar should have
“AvailabilityOnly” permission to get the free/busy information of user, So now
we have to assign the permission to calendar. We can assign the permission by
the following methods.
1. Microsoft
Exchange Management Shell.
2. Microsoft
Outlook.
The easiest way to assign the permission is Microsoft Outlook (I
always prefer) by the following directions,
Open Outlook navigate it to Folder List select “Calendar” Right
Click go to Properties
Select Permission Tab and change the “Default” User Permission
from “None” to “Free/Busy Time” save the changes and close.
We have to wait for some time to replicate the
changes. After 15 min (By default Replication Interval) checked the same now we
able to see the user free/busy information.
Thanks
Keep Visit
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