SSL Certificate Name Mismatch Error

 "The security certificate presented by this website was issued for a different website's address."

Name Mismatch Error in Internet Explorer 7

The name mismatch error indicates that the common name (domain name) in the SSL certificate doesn't match the address that is in the address bar of the browser. For example, if the certificate is for and you access the site without the "www" (, you will get this SSL certificate name error. If you aren't the website administrator you will want to always access the site with the full name (usually include the "www." before the domain name) or ask the website owner to fix the problem.

If you are the website administrator, you will usually want to forward all traffic without the "www" to an address with the "www" and get an SSL certificate with the "www" in the common name. That way you will completely avoid the name mismatch error. Some certificate authorities get around this problem by issuing a certificate with SANs. So you can get a certificate for and include a SAN of so you don't get a name mismatch error. Another common reason for this error is if you are accessing a server using an internal name when the SSL certificate on it just has the public name on it. In this situation you can get a UC certificate that has both the external public name and the internal server name in the certificate. You can verify whether you will get a name mismatch error by using our SSL Checker.

Most web browsers make it clear that you shouldn't just continue when you receive this error. This is because, while most of the time it doesn't, it could indicate that a phisher is trying to pass a website off as a legitimate site. You shouldn't have to continue through this error message on legitimate web sites.

This error is often phrased differently depending on the web browser. These are some common ways the name mismatch error is stated in other browsers:

Different name mismatch errors in different web browsers

Web Browser  Error Message
 Internet Explorer 6  "The name on the security certificate is invalid or does not match the name of the site"
 Internet Explorer 7

 "The security certificate presented by this website was issued for a different website's address."

 Firefox 2

"You have attempted to establish a connection with "". However, the security certificate presented belongs to "". It is possible, though unlikely, that someone may be trying to intercept your communication with this web site.

If you suspect the certificate shown does not belong to "", please cancel the connection and notify the site administrator."

 Firefox 3  " uses an invalid security certificate. The certificate is only valid for:"
 Safari 3  "This certificate is not valid (host name mismatch)"


Name Mismatch Error in Internet Explorer 6

Name Mismatch Error in Firefox 2

Name Mismatch Error in Firefox 3

Name Mismatch Error in Safari 3

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Posted on November 06, 2008
Posts: 15
SSL error
Reply #17 on : Tue May 13, 2014, 19:05:09
if we have 2 profiles on WAS server with the same sub domain can we use the same SSL for both? would it still show this issue?
Posts: 15
Cetificate mismatch error
Reply #16 on : Fri January 11, 2013, 00:30:14
I am recieving this error after dns records were pointed to a new server where the site would be hosted the current server uses a certificate that can be used more than once is there a way of fixing this at all?
Posts: 15
Someone elses URL showing
Reply #15 on : Tue October 02, 2012, 09:23:45
When i use the SSL checker with my Domain of it comes up with someone elses domain name... what does this mean? i have no affiliation with this other domain and i am getting annoyed that i cannot read emails on my devices because they dont match up.

Cheers, Nick
Posts: 15
Certificate error mismatch
Reply #14 on : Tue July 10, 2012, 14:14:08
Ander, thank you for your tip, it worked fine. Muchas gracias! :)
Posts: 15
Certificate error: Allowing for alternate URLs
Reply #13 on : Tue July 03, 2012, 00:22:03
Is there a way by which we can allow web application access with multiple URLS viz., using IP address (say, hostname (say 01hm45678) and complete hostname (say The user should be able to access the we app using either of the URLs without giving any certificate error.
Posts: 2
Re: Can't Verify Security Certificate
Reply #12 on : Fri January 27, 2012, 23:37:13
Hi AR,

It sounds like your host is just using a shared certificate on your site. It would be more secure to use a separate certificate for your site, but you should be fairly safe to click through the warnings in this case.
Posts: 15
Can't Verify Security Certificate
Reply #11 on : Tue January 24, 2012, 13:28:58
I have a Mac and use Macmail, I haven't made any changes to our email or site logins or certificates however I'm getting the dialog "Mail can't verify the identity of "gives our mail server #" (which is the correct #). You might be connecting to a server that is pretending to be "number" ....
I clicked "Show Certificate" and it gave me GeoTurst Global CA > "This certificate is not valid (host name mismatch). I called our web host, Verio, and they said for now just Connect each time, don't click "Always trust". this happens every time I open my email client. Could it be pisching or is this authentic? Can I click "Always Trust"?
Posts: 15
IE8 issue 2 subdomains with respective ssl certificates
Reply #10 on : Thu October 20, 2011, 06:41:38
Hi, I have two subdomains: (with webserver configured to serve using SSL certificate issued for (with webserver configured to serve using SSL certificate issued for redirects to

My issue is, whenever I access using IE8 I get a "Name Mismatch Error". If I access or if I access using Firefox, Chrome, or Safari, everything works fine.

Any clues?

Posts: 15
Reply #9 on : Fri September 09, 2011, 11:51:52
i can't uploade from my wibe sit to server
tise error
Security Exception
Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file.

Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.

Source Error:

Line 210: 'File.Copy(img_path.PostedFile.FileName, "c:\")
Line 211:
Line 212: File.Copy(img_path.PostedFile.FileName, Server.MapPath("fimal\" & img_path.FileName), True)
Line 213: TB1.Text = "fimal/" & img_path.FileName
Line 214:
Posts: 15
domain name mismatch
Reply #8 on : Wed September 07, 2011, 05:44:29
it tells me domain name mismatch when i open a particular website, pls what do i do to solve this problem. thanks
Sonic Bass
Posts: 15
Reply #7 on : Thu March 03, 2011, 03:42:18
Ive got this issue using a watchguard firebox with single sign on. nightmare.
Posts: 15
certificate error mismatch : IE 7
Reply #6 on : Tue October 26, 2010, 11:39:10

As Robert says, if you have a wildcard certificate for one domain, yo won't have the error if the website is like

But if you use it for a websike like

you will get it, because the wildcard certificate it's only for the services in "", not for the subdomain "".

Anyway it's a valid certificate, as for "" like for "", the problem is the message (it doesn't look nice). Internet Explorer have the option to disable it, but you need to do that in each IE client, so it's not very effective. This otion is in Internet tools/Advanced Options/security/, it's something like "Notify abaut the not mattching in the adress of the certificates" (I have it in spanish, so it's not exatly this, but something like this).
Posts: 15
Reply #5 on : Tue August 24, 2010, 04:07:27
CA are offering wildcard services which allows an organisation to release SSL fast but this results in a cert error. Does anyone know the best set-up for a wildcard entry to avoid the error message to the end user?
Posts: 15
The security certificate
Reply #4 on : Sun April 04, 2010, 12:35:57
The security certificate presented by this website was not issued by a trusted certificate authority.
The security certificate presented by this website was issued for a different website's address
Posts: 15
certificate error mismatch : IE 7
Reply #3 on : Thu January 14, 2010, 07:21:04
Your certificate is * therefore when the web site has two or more "." (periods) to left of myherbalife then you will get the mismatch error. The * portion of your URL refers to a wildcard however with SSL if you have a "." as part of wildcard portion you will get this error. Suggest changing your DNS to use "-" instead of a "."
Posts: 2
Re: certificate error mismatch : IE 7
Reply #2 on : Sat April 11, 2009, 23:54:36
Hi Mary,

It looks like you have a certificate for * That is why you get an error when you access it with You will need to change the common name in the certificate to * to get rid of the error. Talk to your certificate provider (GeoTrust) about how to do this.
Mary Sylvia.S
Posts: 15
certificate error mismatch : IE 7
Reply #1 on : Sat April 11, 2009, 02:00:12
Internet Explorer 7 "The security certificate presented by this website was issued for a different website's address."

I'm not getting the SECURITY ALERT Screen, prev i use to get it an when i click yes, it will go to the secured page.
Now my prob with the ceritifacte error is originally the certifacte was issue to "*" ( equifax) and now i tried to connect "" that time i get this error.
help me to clear this error.

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