Technical Tip: GUI Error 'Unable to create certifi...

FortiGate

FortiGate Next Generation Firewall utilizes purpose-built security processors and threat intelligence security services from FortiGuard labs to deliver top-rated protection and high performance, including encrypted traffic.

Article Id 363285

Description

This article explains an error that appears on the FortiGate GUI when a FortiAuthenticator-signed certificate is uploaded to System -> Certificates after a CSR has been generated on the FortiGate.

Scope

FortiGate v7.6.x.

Solution

The error 'Unable to create certificate' may be displayed on the FortiGate GUI when a FortiAuthenticator-signed certificate is uploaded to System -> Certificates after a CSR has been generated on the FortiGate.

Generate a CSR on the FortiGate.

generate CSR 1.png

Sign the CSR using a CA on FortiAuthenticator:

signing csr on fac.PNG

Upon importing the signed certificate onto the FortiGate, an error 'Unable to create certificate' is displayed.

import error.PNG

Despite this error, the certificate will be successfully uploaded to the FortiGate and correctly displayed under Local Certificates.

succesfully uploaded 1.png

Note: The issue has been resolved on FortiOS v7.6.3 build number 3471.

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Technical Tip: GUI Error 'Unable to create certificate' when Importing a FortiAuthenticator-Signed Certificate into FortiGate

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