Title: ERR_HTTP2_PROTOCOL_ERROR
Last modified: December 8, 2020

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# ERR_HTTP2_PROTOCOL_ERROR

 *  Resolved [bhsuarezsh](https://wordpress.org/support/users/bhsuarezsh/)
 * (@bhsuarezsh)
 * [5 years, 6 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-3/)
 * Hello, I have followed the instructions for the OneLogin SAML plugin ([https://wordpress.org/plugins/onelogin-saml-sso/](https://wordpress.org/plugins/onelogin-saml-sso/))
   and I have everything configured properly (or so it seems).
 * When I am redirected back to wp-login.php I get errors from all 3 browsers:
 * Chrome:
    “The webpage might be temporarily down or it may have moved permanently
   to a new web address. ERR_HTTP2_PROTOCOL_ERROR”
 * Firefox:
    “Secure connection failed. An error occurred during a connection to
   monthlyparking.org. The page you are trying to view cannot be shown because the
   authenticity of the received data could not be verified.”
 * Safari:
    “Safari cannot open the page. The error is: “cannot parse response (
   NSURLErrorDomain: -1017)”
 * Does anyone have any information of how I can resolve this? It seems OneLogin
   side is fine, but looks like something on our wordpress site that needs changing.
 * Thanks
    -  This topic was modified 5 years, 6 months ago by [bhsuarezsh](https://wordpress.org/support/users/bhsuarezsh/).

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [yeme673](https://wordpress.org/support/users/yeme673/)
 * (@yeme673)
 * [5 years, 2 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-3/#post-14198539)
 * Hi, what was the solution to this? I’m getting the same error when configuring
   onelogin for WordPress using this plugin
 * Thanks
    Yeme
 *  [Jaber Al Nahian](https://wordpress.org/support/users/rijans/)
 * (@rijans)
 * [4 years, 11 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-3/#post-14626936)
 * After I set following in Apache directives:
 *  Header unset Upgrade
 * and following in NGinx directive:
 *  proxy_hide_header Upgrade;
 * The problem with safari went away.

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘ERR_HTTP2_PROTOCOL_ERROR’ is closed to new replies.

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 * 2 replies
 * 3 participants
 * Last reply from: [Jaber Al Nahian](https://wordpress.org/support/users/rijans/)
 * Last activity: [4 years, 11 months ago](https://wordpress.org/support/topic/err_http2_protocol_error-3/#post-14626936)
 * Status: resolved