Security Certificate when launching Outlook 2010

As of this morning, when users open Outlook to get their emails, there is a Security popup window that states:

Information you exchange with this site cannot be viewed or changed by others. However, there is a problem with the site's security certificate.
The security certificate has expired or is not yet valid
StefanoRosatiAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Matthew KellyCommented:
Exchange uses an SSL certificate just like a website would for https. Is the certificate expired?

In the Exchange Management Console, select "Server Configuration" from the left hand tree. You should have a "Exchange Certificates" list. You can double click on them to open and view when they expire.
0
Will SzymkowskiSenior Solution ArchitectCommented:
What certificate is this related to your Exchagne cert for CAS? Open the cert and see if it has actually expired. If it has then this is why you are getting this message. It might also be a 3rd party plug-in that requires a cert. To check this open Outlook in safemode (outlook.exe /safe). If your cert has expired you may need to create a new CSR and generate a new certificate from your 3rd party provider.

Will.
0
StefanoRosatiAuthor Commented:
There is no "Exchange Certificates" list. This is a Exchange 2007

Thanks
0
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

Carol ChisholmCommented:
0
Will SzymkowskiSenior Solution ArchitectCommented:
Exchange uses certs in order to work peroperly. You should have certs installed on your Exchange servers directly or on your load balancer (if you are using one).

You can use the get-exchangecertificate (on the local exchange box) to get the certs that are installed on the machine.

As stated if they are expired you will be required to generate a new CSR (on your Exchange server) and submit it to your SSL provider.

Will.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Matthew KellyCommented:
The Exchange Certificates list in the Management Console is for Exchange 2010. As others have said, you have to use the get-exchangecertificate via command line to view in Exchange 2007.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Outlook

From novice to tech pro — start learning today.