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Peerobyte / Community / Questions & Answers / Why did the SSL certificate renewal break my payment gateway?

Why did the SSL certificate renewal break my payment gateway? (Edited)

I renewed the SSL certificate on my website, and after that, the payment gateway stopped working. It was functioning correctly before the renewal, but now it doesn’t. Why does the modulus of the new SSL certificate not match the private key?
Could this be causing the issue with the payment gateway? How can I fix this error and get everything working again?

Answers

A modulus mismatch can indeed be the reason why your payment gateway isn’t working. The modulus of the certificate and private key must match for HTTPS to function correctly. If they don’t match, the connection won’t be secure, and the payment gateway may fail to work.

If you followed the standard certificate renewal process, contact your certificate provider’s support. They can check what went wrong during the certificate generation and help resolve the issue.

It seems the problem might be that when you renewed the certificate, you didn’t generate a new Certificate Signing Request (CSR). This can lead to a situation where the new certificate doesn’t match the old private key because they weren’t generated together.

Check if the old private key was used when generating the new certificate. If the private key wasn’t updated, try generating a new CSR and private key, and then obtain a new certificate.

If solving the issue quickly is critical, you could temporarily revert to the old certificate so that the payment gateway starts working again while you troubleshoot the issue.