Failed to renew device certificate. Failed to send request to CSP server.

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Failed to renew device certificate. Failed to send request to CSP server.

L1 Bithead

We have error log pa which version is 8.1

And we following the KB, no error log again.

However, the paorama show still failed...


How log can auto check the cert status?

Can us manually check? restart management plane in panorama?

In version 9.1 before, where can verify the cert status and what is the cert use for?




Failed to renew device certificate. Failed to send request to CSP server. Error: OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to




L4 Transporter

Thank you for the post @Jason_Tong 


Device Certificate is not supported in PAN-OS 8.1 yet. If you try to provision a Device Certificate from Panorama by sending: Request OTP from CSP, then you should see that field for Device Certificate is empty:


This is probably reason why you are getting this error. After you upgrade your managed Firewall to version 9.1, you should be able to provision Device Certificate.


Kind Regards



Pavel Kucera

Thank you for reply.


We verity the rule find out.

The url has different.



But we see the correct IP is -

Two URL is the same?



L4 Transporter

Thank you for reply @Jason_Tong and sorry for getting back to you with delay.


I tried to replicate your environment to reproduce the issue. First of all I gave you misleading information in my earlier reply. Device Certificate is indeed supported in later maintenance releases of PAN-OS 8.1. In my case after I installed PAN-OS 8.1.20, I was able to see under: Setup > Management > Device Certificate the option to enroll Device Certificate.


In my Lab environment, I did not have an issue to request Device Certificate, so unfortunately I was not able to reproduce it, however I could confirm that this traffic goes over management interface unless you configured: Service Route. In order to troubleshoot this further, could you take packet capture on management interface while while you provision Device Certificate: ?


Are you facing the same issue when you request Device Certificate locally from Firewall instead through Panorama?


Kind Regards


Pavel Kucera
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