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A certificate could not be found that can be used with this Extensible Authentication Protocol
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A certificate could not be found that can be used with this Extensible Authentication Protocol

A certificate could not be found that can be used with this Extensible Authentication Protocol

In this blog, we will show you the steps to resolve the A certificate could not be found that can be used with this Extensible Authentication Protocol error for point-to-site VPN

 

ERROR OVERVIEW

  • You will get the below error message when you try to connect the Azure VPN from your local machine.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

RESOLUTION STEPS

 

  • While importing the certificate, make sure that you have to use the store location is the Current user.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Also, make sure that you have select the personal folder to store the while exporting the certificate.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Once the import the completed, Double-click on the certificate.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Click on the certificate path tab.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Ensure you see the client certificate is issued with the self-signed root certificate. This the key thing for the successful VPN Setup. In the below screenshot, it shows that root certificate is missing.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

EXPORT THE CERTIFICATE WITH PROPER OPTION

  • Right-click on the VPN client certificate and select All task – Export.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • From the welcome screen, Click on Next.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Select Yes, export the private key option.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Here is the key option. Make sure that you have selected the Include all the certificates in the certification path if possible option and click Next.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Provide a password for this certificate and click Next.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Provide a filename and path to export the certificate.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Click Finish to complete the wizard.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

RE-IMPORT THE CLIENT CERTIFICATE

  • Delete the old certificate from the machine through certificate manager snap-in.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Once you delete the old certificate, right-click on the new certificate and click on Install PFX option.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Follow the wizard instructions and install the certificate. Once its complete, double-click on the certificate and select the certificate path tab.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • You will able to see the root certificate along with the VPN client certificate.

A certificate could not be found that can be used with this Extensible Authentication Protocol

VERIFICATION

  • Open the Azure VPN window and click on Connect button.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • Azure VPN was connected successfully.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

  • You can verify the VPN IP through command prompt.

A certificate could not be found that can be used with this Extensible Authentication Protocol

 

VIDEO

 

Thanks for reading this blog. We hope it was useful for you to learn the root cause of this error.

One thought on “A certificate could not be found that can be used with this Extensible Authentication Protocol”

  1. Hi,
    Im trying to establish VPN connection for P2S. I got successfully connected in my server for my login .however,when i tried different users for same server,it has thrown same as per the blog.Could you please share some details how to fix this problems for other users logins.

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