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Fix SSL certificate failures in Zaps

troubleshooting
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When you send a webhook using a Zap, you'll typically expect to receive a 200 Success message. However, sometimes your Zap may return a SSL Certificate Failure error.

Untrusted Certificate Authority


1. Make sure your certificate is not self-signed

If you’re using a self-signed certificate, it’s likely you’ll receive a SSL Certificate Failure error. Zapier currently only supports SSL certificates which are issued by public certificate authorities.

A free SSL certificate can be obtained from letsencrypt.org. Let’s Encrypt is a free, automated, and open certificate authority provided by the non-profit Internet Security Research Group (ISRG).


2. Make sure your certificate is for the correct domain/subdomain

An SSL Certificate Failure can also happen as a result of incorrect usage of a “www.example.com” or “example.com” certificate on a domain like “testing.example.com”.

The reverse can be the case as well, for example: a “*.example.com” wildcard certificate for a domain that is just “example.com”.


3. Test your certificate for installation issues

Sometimes the problem lies in the way the certificate was installed. For example, this might include missing chain certificates, improper modes, etc.

Note

Zapier is not able to perform extra certificate downloads via your Certification Path. This is one common reason your browser (which performs those extra downloads automatically) might not return an SSL error, while Zapier does. To fix this, you’ll need to install any extra certificates on your domain directly.

To test your certificate, we recommend a tool like SSL Labs, which gives a full breakdown of any potential issues with your SSL certificate.

If you’re still having this issue, test your certificate on SSL Labs and send the resulting test results URL to Zapier support.


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