I have a perplexing problem. I have a server that we are using OWA. Some of the users are receiving an 403 Forbidden/Access Denied page when logging on to OWA. I can from multiple different sites access this same account without receiving the 403 page. My assumption is that it is a mis-configuration at the client level but not sure where to tell the users to check. Again, this is not every user, it is only a select few, and with each of them I can log in from multiple different sites/browser versions without receiving the error.
