Hello,

I have a couple of questions:
Have you configured the App Domains and Site URL in the Facebook app settings?
Are you using Forms Authentication?
Are you using the default social-auth binaries which came with MonoX?

Regards,
Mario

Yes, I entered the app domain and site URL as mono.mydomain.com (my testing URL )
I am using the same code from the nighty build

Please ensure that in your web.config you have this handler registered:

Regards,
Mario

yes, the handler is already there in the web.config

Can you also confirm that handler is in both places for IIS 6 & 7.x ?

Thanks

I have the following
under httpHandlers
<add verb="*" path="*.sauth" type="Brickred.SocialAuth.NET.Core.CallbackHandler" />

and under handlers
<add name="socialAuth.NET" verb="*" path="*.sauth" type="Brickred.SocialAuth.NET.Core.CallbackHandler" />

I am running windows 2003 web server

UPDATE
It worked in IIS 7 (windows 7) but it did not work in IIS 6.0 (windows 2003 server)

I used the same setting/configuration and build in both

Any help to make it working on IIS 6.0
Does it require additional or different configuration??

Please check the mime types for that handler in the IIS 6 configuration.