Just setup a on-premise with IFD solution, but the users are experiencing lot's of login prompts using the CRM client from Outlook on the internal network (not IFD). I've added the server address to both trusted site and intranet site in IE, but nothing...
When prompted and they enter the correct user/pass, they are prompted again (1-3 times), if they just click OK they are prompted again (1-3 times). They are not denied access to the CRM at this point, nor is the CRM addin disabled. I've made a sharepoint integration but it does not seem that they are prompted because they are trying to access sharepoint. However when interacting with sharepoint they are unable to do so (they have sufficient rights - for the moment full access) and I suspect it is because of the problems with authentication.
One of the users have run the diagnostics tool and the only errors are "Outlook may have disabled the CRM-addin..." and "Excel might have disabled the CRM-addin...". The addin is not disabled.
I believe most computers are Windows XP, don't know IE version, but I assume both 7 and 8. All should have been upgraded from Office 2003 to Office 2007.
Tried the KB, but that didn't solve the problem. The registry key was set to 1, and changed to 0. A restart was performed on the machine but login box still appears.
Edit: Seems to have solved the problem after all. It may also have something to do with the integration with sharepoint.
