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RPC over HTTPS not working

Posted on 2010-11-14
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Last Modified: 2012-05-10
I have a Server 2003 SP2 server running Exchange 2003 SP2. The server is the only DC as well.
RPC over HTTPS used to be working around 4 weeks ago. Now it isn't. The remote users simply have Outlook showing as disconnected.
OWA works fine without any certificate errors.
I have run through a checklist to make sure all the registry keys etc are correct.
I can access the https://mydomainname/rpc site and get the authentication box

I also cannot connect outlook using a VPN connection. I can ping the Server by name and IP address but the profile won't connect. I have tried creating a new profile and tried turning off Cached mode. Nothing seems to work.

Thanks!

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Question by:nealerocks
13 Comments
 
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Expert Comment

by:getzjd
ID: 34133592
Try this https://www.testexchangeconnectivity.com/  and report the results.   What firewall d you have?    What is your VPN endpoint?  
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Expert Comment

by:ahdfx
ID: 34133599
What version of Outlook are you using?  anything change there?
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LVL 12

Author Comment

by:nealerocks
ID: 34133633
We are using Outlook 2007, nothing has been changed. I am only using VPN to test. It is a Microsoft RRAS VPN. We are using a Sonicwall firewall. All the required ports are open.

When I ran that test everything passed except ping the RPC proxy.

"A Web exception occurred because an HTTP 401 - Unauthorized response was received from IIS6"
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LVL 34

Expert Comment

by:Shreedhar Ette
ID: 34133665
Hi,

Refer this previously answered question:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/SBS_Small_Business_Server/Q_24399934.html

Also Run Exchange 2003 Best Practice Analyzer tool and fix the errors reported.

Hope this helps,
Shree
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Author Comment

by:nealerocks
ID: 34133768
I ran the BPA, nothing that seemed to be related came up.
The link to a question was not really resolved. Plus I don't have an SBS server.
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Expert Comment

by:Alan Hardisty
ID: 34134866
What authentication methods do you have set on the RPC virtual Directory (should be Basic and Integrated Windows) and also what do you have set on the Exchange Virtual Directory (should also be Integrated and Basic)?
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Author Comment

by:nealerocks
ID: 34134992
Authentication seems to be ok.
Looks like it is an MTU issue on the router.
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Accepted Solution

by:
nealerocks earned 0 total points
ID: 34220555
I have set up a dedicated VPN and it is working now.
Thanks for the suggestions guys.
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LVL 15

Expert Comment

by:getzjd
ID: 34222041
A dedicated VPN?  What kind of VPN did you have before?
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LVL 12

Author Comment

by:nealerocks
ID: 34223366
The users had dial up VPNs.
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Expert Comment

by:getzjd
ID: 34224251
What kind of VPN did you set your users up with then?
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Author Comment

by:nealerocks
ID: 34224889
I configured a site to site vpn via a sonicwall.
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Author Closing Comment

by:nealerocks
ID: 34246479
I figured it out myself, seems to be working ok.
Had to make some changes to the network setup
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