SSL Handshake Failed Error Code 525: How to Fix it

SSL handshake failed error code 525 occurs when trying to access certain web pages, and today we’re going to show you how to fix this problem if you’re a web administrator.

What is HTTP status code 525?

This is a Cloudflare-specific HTTP response and it occurs if the SSL handshake between Cloudflare and the origin web server can’t be completed.

How can I fix the SSL handshake failed error code 525?

1. Add SSLProxyCACertificateFile to your configuration

1. Open httpd-ssl.conf file.
2. Next, add the SSLProxyCACertificateFile value.
   
3. Save changes.

2. Other solutions to try

1. Ensure that none of the IP addresses from Cloudflare aren’t blocked.
2. Bind the CND domain name on the Nginx server.
3. If your certificate has expired, renew it.
4. Replace OpenSSL with LibreSSL and check if that helps.

Now that you know what causes SSL handshake failure, you can go ahead and fix it. Keep in mind that even if you see this error as an end user, this is a server issue, and only the server administrator can fix it.

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Sadly, this isn’t the only error you can encounter, in our earlier guides we wrote about Handshake failed returned SSL error code 1 and error during an SSL handshake with remote server.

Sometimes SSL errors can appear with the following code SSL_error_handshake_failure_alert, but we have a guide that addresses this issue.

Have you ever experienced SSL handshake failed error code 525 when using nginx? If so, let us know which method you use to fix it.