Everything is working correctly with ADFS 3.0 both internally and externally but I get this as my login page from outside. It is missing all of the formatting (blue box, nice font, etc.). It's like all of the HTML isn't being seen. Anyone have an idea what is off?

I'm expecting a window like this: http://thinketg.com/wp-content/uploads/2014/08/ADFS-3-Default-page.png

Thanks

Figured this out. The Mex endpoint was getting a 503 error due to a conflict with the CRM Sandbox port. Went through the steps below and it is sorted.

Fix the MEX Endpoint

When you browse externally to the URL: https://sts1.iwebscrm.com/adfs/services/trust/mex

Where sts1.yourorg.com replaces ours you should see an XML endpoint return. We found that after setup of CRM 2013 in the above mentioned environment there was a conflict with the Sandbox port 808 and this caused the failure of the service, giving a 503 error for /adfs/services/trust/mex

The solution is simple: Run the following command in PowerShell

Set-ADFSProperties nettcpport 809

Then restart ADFS from the Services, or restart the server. 

• Proposed as answer by Mary DongMicrosoft contingent staff, Moderator 15 minutes ago

Hi bmansfield,

Glad that you solve the problem and thanks for sharing the solution for anyone else to refer to.

Best Regards,

Mary Dong