We have tried to CASify OWA using We made the necessary changes to the web.config, however the ASP.Net application does not even load properly. We received the same error when deployed on our servers and on a development pc. The message received was:

Could not load type 'DotNetCasClient.CASAuthenticationModule' from assembly 'DotNetCasClient'

The DLL was placed in the appropriate directory but for some reason it appears as though .Net is unable to resolve it.

Any help in the right direction would be appreciated.

- Brian

Our site is using uPortal 2.0 with SQL Server 2005 and the system works fine.

Then I enabled SQL Server 2005 'database mirroring' and the following phenomenon appears:

 (1) The FIRST login to uPortal is successful after enabling 'database mirroring'.

(2) Subsequent attempt to login result in blank web page with web browser is trying to connect.  It seems that the system 'hangs'.

(3) Restart the uPortal and the (1), (2) appear again.

If I remove 'database mirroring' and restart the uPortal,  everything becomes normal.

To confirm whether 'database mirroring' works normally, I wrote a servlet program to insert records at the principal server and new records found at

the mirror server.  Therefore, it seems that the uPortal 2.0 not work with SQL Server 2005 'database mirroring'. 

Please advise whether there are solutions.  Thank you.

Newton Lui,


Clearinghouse Wiki and Issues

JIRA/Confluence have been migrated. All data should have been preserved.

The new URLs are: (JIRA) (Confluence)

I've also setup a redirect on the old port 9000 urls, so they should forward to the appropriate content on the new installs. The old URLs should be considered deprecated, and the redirect will likely be removed within the next 6 months (after Google et al have had a chance to update their indexes)

Jason Shao

NOTE: This information is no longer accurate. The URLS should be and
Scott Battaglia

Kudos on 2.5.0

Release management, a thankless job – but we're glad that you're doing it Andrew.