I configure HTTP2 for my application and randomly get a browser ERR_SSL_PROTOCOL_ERROR.
this only happens on the Google Chrome browser. Everything is fine on Firefox.
I'm using Encrypth to encrypt with SSL and everything worked fine. The problem occurred after the activation of HTTP2 today. I'm using Apache2. I updated it in 2.4.38 to support the HTTP2 module
I have tried the following:
disable the http2 module / restart apache2
clear all browser cache
Resetting the HSTS header with the help of .htacess:
Set of Strict-Transport-Security headers "max-age = 0; includeSubDomains;" env = HTTPS
No results, it is always randomly the error.
here is my config vhost:
DocumentRoot / var / www / domain / prod / web Server_name sub.domain.tld ServerAlias Domain ServerAdmin firstname.lastname@example.org Options FollowSymLinks MultiViews AllowOverride All Order allow, refuse Allow everyoneErrorLog /var/www/domain/prod/logs/error.log LogLevel warn Combined CustomLog /var/www/domain/prod/logs/access.log ServerSignature On SSLEngine On Include /etc/letsencrypt/options-ssl-apache.conf Protocols h2 h2c http / 1.1 SSLCertificateFile /etc/letsencrypt/live/domain/fullchain.pem SSLCertificateKeyFile /etc/letsencrypt/live/domain/privkey.pem