We recently upgraded from CRM 3.0 to 4.0 and use the system both on our local company network as well as via internet for off site employees or those who work from home. The IFD configuration utility was not run following the upgrade. As a whole, the system works, however, certain entities (i.e. the project entity) will intermittently not allow notes to be accessed, and users will randomly experience "HTTP 404 Not Found" errors when using the system and must re-login in order to continue using the system.
Also, I am unclear on the details of the security certificate used on the system as it was setup when CRM 3.0 was installed and has not been changed.
Could these issues be due to the fact that the IFD tool was not ever run? Problems with IIS? Security certificate? Some combination thereof?