RPC over http

[Simon]

Hi all

Easy one for you all

Basically RPC over HTTP is working fine out of office. But when the user is
back in the office and connected locally they are always getting the
username/password dialog box and i want to irradicate this as they have
already authenticated on the network. Can anyone advise me

Thanks

 

[Roady [MVP]]

Hard to say without any configuration info. Most likely you have the option
"on fast networks..." enabled so it will still try to connect via RPC over
HTTP on the local network.

 

[Simon]

Yes that is what i want it to do, but i don't want it to prompt me for a
username and password as the user will have already logged onto the laptop

 

[Roady [MVP]]

But a logon to the laptop is not the same as an authentication against
Exchange.

 

[neo [mvp outlook]]

FWIW, as long as the option is set to use basic authentication then one has
to supply credentials regardless. The sad part is that while you can go
with NTLM authentication for the RPC/HTTPS proxy part, there are many
firewall solutions (e.g. PIX) that trash the authentication attempt and
cause RPC/HTTPS to fail.

 

[Simon]

Thanks for both your answers.

So what you are both saying is that if the user connects their laptop onto
the domain, the same as anyone else, if they have RPC over HTTP enabled it
will always ask them for their credientials. (I have windows integrated
authentication enabled on RPC of IIS) So how do all the other users
authenticate with exchange because they are not asked twice??

Thanks

 

[Roady [MVP]]

Again; is the option "on fast networks..." enabled or disabled?
If enabled and you have Basic Authentication enabled, you will also connect
to Exchange via RPC over HTTP on the local network and thus you must supply
your credentials.