If you’re seeing the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message, it means that the security certificate used to sign the OCSP response is invalid. This can happen for a variety of reasons, but most often it’s because the certificate has been revoked.
If you’re the website owner, you can fix this error by re-issuing your certificate with a new signing certificate that is not revoked. If you’re a visitor to the website, there’s not much you can do besides try again later. The website owner should be able to fix the problem relatively quickly.
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Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT
What causes the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message
The “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message is caused by a problem with the way that the security certificate is configured on your computer. This error can be caused by a number of factors, but the most common cause is that the security certificate is not configured correctly.
There are a few things that you can do to fix this problem. The first thing that you should do is to check the configuration of the security certificate on your computer. Make sure that the certificate is installed correctly and that the correct settings are selected.
If the security certificate is configured correctly, then the next thing that you should do is to check for any updates that are available for the security certificate. Many times, there are updates that can be downloaded that will fix problems with the way that the security certificate is configured.
If you are still having problems after checking the configuration of the security certificate and updating the security certificate, then you may need to contact the company that issued the security certificate. They will be able to help you troubleshoot the problem and get the certificate working correctly.
How to fix the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message
If you receive the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message, it means that the signature on the OCSP response from the server is invalid. This can be caused by a number of things, but the most likely cause is that the server’s certificate has been revoked. To fix this problem, you will need to obtain a new certificate from the server.
FAQ about the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message
If you receive the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message, it means that the security certificate for the website you are trying to access is invalid. This can happen for a variety of reasons, but most often it is because the website’s certificate has expired or has been revoked by the Certificate Authority.
If you are the website owner, you will need to renew your certificate with a valid Certificate Authority. If you are just trying to access a website, you can try contacting the website owner to see if they can provide you with a valid certificate.
More information about the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message
If you see the “Fix: SEC_ERROR_OCSP_INVALID_SIGNING_CERT” error message, it means that the digital signature on the OCSP response from the server could not be verified. This could be due to a number of reasons, including a misconfigured server or an invalid certificate.
To resolve this issue, you will need to obtain a valid OCSP signing certificate and configure your server to use it. Once that is done, you should be able to access the site without any problems.

Must Read
1. Check your server’s clock
Make sure that your server’s clock is accurate. An inaccurate clock can cause problems with OCSP signing and verification.
2. Use a valid signing certificate
Make sure that you are using a valid signing certificate for your OCSP server. The signing certificate must be from a trusted CA and must be valid for the current date.
3. Set the correct signing algorithm
Set the correct signing algorithm when configuring your OCSP server. The most common algorithms are SHA-1 and SHA-256.
4. Use a valid OCSP responder ID
Make sure that you are using a valid OCSP responder ID. The responder ID must match the signing certificate’s Subject Name or Subject Alternative Name.
5. Set the correct OCSP Responder URL
Make sure that you are setting the correct OCSP Responder URL. The URL must be reachable from the client that is requesting the OCSP response.
6. Set the correct OCSP Service Location
Make sure that you are setting the correct OCSP Service Location. The Service Location must be reachable from the client that is requesting the OCSP response.
7. Use a valid OCSP signing key
Make sure that you are using a valid OCSP signing key. The signing key must be from a trusted CA and must be valid for the current date.
8. Check the OCSP signing chain
Make sure that the OCSP signing chain is valid. The signing certificate must be issued by a trusted CA and the OCSP responder must be configured with a valid signing certificate.
9. Use a valid OCSP responder certificate
Make sure that you are using a valid OCSP responder certificate. The responder certificate must be from a trusted CA and must be valid for the current date.
10. Set the correct OCSP responder port
Make sure that you are setting the correct OCSP responder port. The default port for OCSP is 80.
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