Hi

We are using Exchange Server 2013 in our office from last 1.5 years. till today it was working fine.

but from last two hours all users started getting certificate error.and nobody is able to connect to Exchange Server.

Web-mail & e-mail on mobile is working fine. but nobody is able to connect using outlook.

Error :- The name of the security certificate is invalid or does not match the name of the site.

Request if some body can help. I am using self sign certificate only.

Thanks in Advance.

Regards,

Raman

Hi

We are using Exchange Server 2013 in our office from last 1.5 years. till today it was working fine.

but from last two hours all users started getting certificate error.and nobody is able to connect to Exchange Server.

Web-mail & e-mail on mobile is working fine. but nobody is able to connect using outlook.

Error :- The name of the security certificate is invalid or does not match the name of the site.

Request if some body can help. I am using self sign certificate only.

Thanks in Advance.

Regards,

Raman

Run Get-OutlookAnywhere | fl servername, *hostname*

Also Get-ClientAccessServer | fl name, *uri*

Make sure that the names for InternalHostname, ExternalHostname and AutodiscoverServiceInteralUri are on your certificate.  If they are, then you will need to install the certificate in the each computers trusted root store. Or you can purchase a cert from a trusted 3rd party cert provider.

It was there before but now I am getting new Certificate. previously the certificate name & my server name was same. but I can't see that certificate on my server now.

the New Certificate that is coming in Exchange as well as when I open outlook is -- Microsoft Exchange Server Auth Certificate.

Can I create the certificate now ...with the name of my Server.

or can I download it from Internet Explorer & then upload into the Exchange Server ..

no I can't, I can only use self sign certificate.

all my users getting the same error. request for support.

Error :- The name of the security certificate is invalid or does not match the name of the site.