Error: "Certificate Already Exists" When Installing\Updating Certificate on NetScaler
Article ID: CTX206045
Updated On:
Description
The following error is displayed when installing\updating certificate on NetScaler:
Certificate Already Exists
Resolution
Ensure that the serial number of the certificate that is being installed does not match with the existing certificate on the NetScaler.
Problem Cause
You cannot install two certificates with the same serial number from the same certification authority.
Issue/Introduction
Additional Information
When you create certificates, each certificate must have a unique serial number. Additionally, the certificate has the following components that help identify a certificate:
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Subject: This is the common name to which the certificate is issued. The Subject is generally a domain name. This is a unique identifier to which the certificate is issued.
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Serial Number: This is a unique number for the certificate. This number is issued by a certification authority.
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Issuer unique identifier: This is a unique identification for the certificate issuing authority.
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Subject unique identification: This is the unique identification for the owner of the certificate.
