Getting net::ERR_HTTP2_PROTOCOL_ERROR on browser and status 403 on Apache logs for no apparent reason

Solution Unverified - Updated -


  • After configuring HTTP/2 on our server, Application Team is stating they are not able to view the web page in http/2 protocol. The browser receives an error: `net::ERR_HTTP2_PROTOCOL_ERROR. Also when we check Apache access log we see: - - [09/Dec/2021:06:29:42 -0500] "GET / HTTP/2.0" 403 - 7315 "-" "Mozilla/5.0 ..."


  • Red Hat Enterprise Linux (RHEL)
    • 7
    • 8
  • Red Hat JBoss Core Services (JBCS)
  • Apache httpd
    • 2.4
  • HTTP 2

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