Kemp Support, how can we help?

The latest application delivery knowledge and expertise at your fingertips.

How to resolve issues with Office 365 Calendar information.


If you're using ESP to provide Frontend Authentication for your Exchange environment, it's possible that your Office 365 clients are unable to see calendar information for your On Premise Exchange Users. 



Add two "Autodiscover" directories to your "Pre-Authorization Excluded Directories"

(Only Necessary if you Do Not have "Delegate to Server" set as your "Client Authentiaction Mode"). 



Navigate to your Exchange Virtual Service > Autodiscover Sub Virtual Service > ESP Options > "Pre-Authorization Excluded Directories. Add the below directories space separated. 

 /autodiscover/autodiscover.svc/wssecurity /autodiscover/autodiscover.svc 



Was this article helpful?
0 out of 0 found this helpful




going through this now. is it just me or is the line to be added to Pre-Authorization Excluded Directories missing the "y" at the end of wssecurity?



user user

Thank you for bringing this to our attention. We have gone ahead and made the change.