How to resolve -- PR_CONNECT_RESET_ERROR

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  • 23 May 2021
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This error might releted to your Nginx configuration(at least problem was the nginx for me)

After enable the SSL connection and try to connect from the browsers:

  • Firefox returns :
An error occurred during a connection to PR_CONNECT_RESET_ERROR

    The page you are trying to view cannot be shown because the authenticity of the received data could not be verified.
  • Google Chrome returns:
The connection was reset.

Checking the connection
Checking the proxy and the firewall

In my configuration, I only force the TLSv1.3

http {
	ssl_protocols TLSv1.3;

And nginx version:

$ nginx -V
nginx version: nginx/1.18.0
built by gcc 7.3.1 20180712 (Red Hat 7.3.1-10) (GCC)
built with OpenSSL 1.0.2k-fips  26 Jan 2017
TLS SNI support enabled

Problem is that, OpenSSL 1.0.2k-fips doesn’t support the TLSv1.3, either I should update the openssl or support both TLSv1.2. Quick solution could be just updating nginx.conf file like this:

http {
	# if openssl version is 1.0.2 then can not enable tlsv1.3, gives an error PR_CONNECT_RESET_ERROR
	ssl_protocols TLSv1.2 TLSv1.3;

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