Question : RPC through HTTP keeps prompting for pw on Exchange 2010

We have an Exchange 2010 server on Server 2008 R2 and I have installed the RPC proxy and also enabled outlook anywhere, but whenever people connect from the outside it asks for the login but will not accept the user/password.

What are the minimum authentication options on the RPC and RPC with cert directories so that people will be able to use outlook anywhere?

Answer : RPC through HTTP keeps prompting for pw on Exchange 2010

basic b/c you would be using ssl anyway and that connection would be encrypted. Just make sure when the authenication box comes up that you but the domain\username not just the username.

What version of Outlook are you using?