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Wireless Certificate SChannel error (The certificate received from the remote server has either expired or is not yet valid)

Posted on 2011-02-28
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Last Modified: 2013-11-09
We recently renewed both the Root and intermediate CA servers certifcates in the organization.  This was done successfully.  
For client PC's to access our wireless network we use certificates (WPA2 / AES).  These certificates are auto generated upon request from the client PC.  These requests are carried out by the intermediate CA.  Now when the PC's try to authenticate to use the wireless network the computer gets the following error:

Source: Schannel
Event ID:  36881
Description:  The Certificate received from the remote server has either expired or is not yet valid.  The SSL connection request has failed.  The attached data contains the server certificate.

So far I've done the following on Client PC:
1)  Via Certificate MMC (Both Personal and Local Computer) removed old / expired root and intermediate certificates
2)  Removed all cached ssl certificates out of IE (Tools>Internet Options>Contents Tab>Certificates>.

After this I still can't get these on Wireless.  I have other devices on our network working fine with wifi, for example iPhone authenicating the same way.  This is why I think there is somethng cached on the local PC's.  The PC's in my environment are Windows XP and Windows 7.

One thing to Note:  I'm not sure if this has anything to do with this issue, when on the Intermediate CA Server in the Certificate Authority MMC, when I right click the server name and go to properties, I noticed in the General Tab the the expired certificate is "Certificate #0 (expired)" is first and Certificate #1 is beneath it.  I tried to remove the old certificate from here by removing it from "Certificate MMC", however once I restart the Certificate Authority service, this old certificate gets put back in the database.  Is there a way to remove the old certificate?

Assistance is needed.  I've been researching this for a few hours and haven't found the fix yet.
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Question by:Anthony Graczyk
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Expert Comment

by:ded9
ID: 35007433
Request mods to reassign this question to windows server 2008 section. You will get an answer.

Also check this link

http://www.experts-exchange.com/Networking/Security/Q_25072298.html?sfQueryTermInfo=1+10+30+certif+either+expir+from+ha+receiv+remot+server


Ded9
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Accepted Solution

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Anthony Graczyk earned 0 total points
ID: 35009912
I ended up fixing my problem.  As I noted in my question, iPhones were working correctly with wifi, however my Windows Clients weren't with regards to certificate based authentication.  This pinpoints an issue with my windows clients and they way I was setting up the connection for the wireless profile.  The fix was to uncheck "Validate server certificate" in the "Smart Card or other Certifiacte Properties page".  
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Author Closing Comment

by:Anthony Graczyk
ID: 35045617
This solution fixed my problem.
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Expert Comment

by:ObiLan
ID: 38213760
Old topic but I post here bacause it popped up first in the search. We had same issue and the problem was that during renewal Windows server did not delete the old certificate and NPS was using it. Deleting the old one trough MMC/Certificates/Computer Account made NPS to use the new one.

I think unchecking "Validate server certificate" will leave you more vulnerable to password phishing attacks trough rogue APs since client won't validate servers before sending login credentials.
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