Solved

Outlook RPC over HTTP certificate error

Posted on 2014-01-16
3
1,464 Views
Last Modified: 2014-01-22
We have an Exchange 2003 SP2 server (SBS2003) on which self signed certificate just recently expired. I have issued another self signed certificate. However a remote user using Outlook 2007 via RPC over HTTP receives the following error:

There is a problem with the proxy server's security certificate. The security certificate is not from a trusted certifying authority.
Outlook is unable to connect to the proxy server mail.<domain>.com. (Error Code 8)

I have accessed Outlook Web Access page (which works fine) on the PC and installed the new certificate to the "Trusted Root Certification Authorities" but the issue remains. I have created a new Outlook profile but no change.

I have confirmed that the server side is configured properly by going to

https://fully.qualified.domain.name/RPC

(as suggested by:   http://www.msexchange.org/articles-tutorials/exchange-server-2003/management-administration/Troubleshooting-RPC-over-HTTPS-Part2.html)

Anyone has encountered this and resolved it? I would appreciate your help.

Thanks.
0
Comment
Question by:realtimer
3 Comments
 
LVL 17

Expert Comment

by:Chris Millard
ID: 39786642
If you haven't done so, you need to run IE as administrator before adding the certificate to the Trusted Root Certification Authorities, and also make sure that you remove any old certificate from the store just to be safe.
0
 
LVL 19

Expert Comment

by:R--R
ID: 39786725
Is there a root certificate on the certificate? it can be find in the certificate path. Install that as well on PC where you are configuring RPC over HTTPS.
0
 
LVL 63

Accepted Solution

by:
Simon Butler (Sembee) earned 500 total points
ID: 39788177
Just buy a certificate.
A trusted SSL certificate suitable for this can be had for less than $20 if you look around. There are even some free options (StartSSL) which are fine for Windows machines. Self Signed certificates simply aren't worth the hassle.

Simon.
0

Featured Post

What Should I Do With This Threat Intelligence?

Are you wondering if you actually need threat intelligence? The answer is yes. We explain the basics for creating useful threat intelligence.

Join & Write a Comment

Local Continuous Replication is a cost effective and quick way of backing up Exchange server data. The following article describes the steps required to configure Local Continuous Replication. Also, the article tells you how to restore from a backup…
This article explains in simple steps how to renew expiring Exchange Server Internal Transport Certificate.
To show how to create a transport rule in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center. Navigate to the Mail Flow >> Rules tab.:  To cr…
how to add IIS SMTP to handle application/Scanner relays into office 365.

708 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

18 Experts available now in Live!

Get 1:1 Help Now