Solved

The name of the security certificate is invalid or does not match the name of the site

Posted on 2013-01-31
6
2,384 Views
Last Modified: 2013-08-22
Hi,

We recently moved a client from MS Exchange Email to Office365, all accounts and profiles have been created in Outlook and mail flow is fine.

When users open Outlook, they receive a security alert with the error "The name of the security certificate is invalid or does not match the name of the site". Users can proceed and are prompted once more, again proceeding, they then receive a prompt for user credentials to connect to the old remote Exchange server, this can also be skipped by without causing any issues sending/receiving mail.

How can the messages be prevented from appearing when opening Outlook ? So far we have tried disabling all MS Exchange services on their Windows SBS server and flushing DNS cache locally. I have also attached screenshots.

Many Thanks in Advance
Login---EE.jpg
Security-Alert---EE.jpg
0
Comment
Question by:PurityIT
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 58

Expert Comment

by:Cliff Galiher
ID: 38839386
Outlook 2007 and newer will still attempt to use autodiscover to configure outlook settings. Since exchange is still present on SBS, will still attempt to configure a local connection.

SBS is an integrated suite of products and doesn't do well if you are trying to ignore some components. Exchange is the most notable of these and if you aren't using exchange, you should really consider migrating off of SBS standard.

With that said. You can use the remove-autodiscovervirtualdirectory command to remove autodiscover and, as long  as the rest of your DNS infrastructure is intact, should resolve the issue. this is destructive, however, and does put SBS in a state where patching may cause future problems and where the wizards will be unaware of the current status of exchange. So this is, in my opinion, a stopgap measure and not a long term solution. As always, have a backup!
0
 
LVL 13

Expert Comment

by:Yagya Shree
ID: 38870545
Found some good post which talks about the above error and solution in detail:

Outlook: "The name of the security certificate is invalid or does not match the name of the site"
http://hiltont.blogspot.in/2011/06/outlook-name-of-security-certificate-is.html

The Name on the security certificate is invalid or does not match the name of the site - PART 2
http://blogs.technet.com/b/danielkenyon-smith/archive/2010/05/13/the-name-on-the-certificate-is-invalid-or-does-not-match-the-name-of-the-site-part-2.aspx
0
 
LVL 7

Expert Comment

by:ms-pro
ID: 38901374
Hi,

If your users are all O365 based, then you should not receive this security warning. Can you post a screenshot with warning message details.

Try to add the server name into IEx trusted site security zone.
0
 

Accepted Solution

by:
PurityIT earned 0 total points
ID: 38918104
Hi,

We disabled Exchaneg services as part of the decomission and this helped the issue.
0
 
LVL 25

Expert Comment

by:Diverse IT
ID: 39429603
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
0

Featured Post

MS Dynamics Made Instantly Simpler

Make Your Microsoft Dynamics Investment Count  & Drastically Decrease Training Time by Providing Intuitive Step-By-Step WalkThru Tutorials.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Large Outlook files lead to various unwanted errors and corruption issues. Furthermore, large outlook files can also make Outlook take longer to start-up, search, navigate, and shut-down. So, In this article, i will discuss a method to make your Out…
This article will help to fix the below error for MS Exchange server 2010 I. Out Of office not working II. Certificate error "name on the security certificate is invalid or does not match the name of the site" III. Make Internal URLs and External…
Migrating to Microsoft Office 365 is becoming increasingly popular for organizations both large and small. If you have made the leap to Microsoft’s cloud platform, you know that you will need to create a corporate email signature for your Office 365…
In this video I am going to show you how to back up and restore Office 365 mailboxes using CodeTwo Backup for Office 365. Learn more about the tool used in this video here: http://www.codetwo.com/backup-for-office-365/ (http://www.codetwo.com/ba…

691 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