mixed content error

[ghost]

Hello

Checklist

• Have you pulled and found the error with jc21/nginx-proxy-manager:latest docker image?
  • Yes
• Are you sure you're not using someone else's docker image?
  • Yes
• Have you searched for similar issues (both open and closed)?
  • Yes

Describe the bug unfortunately there is a problem with the encryption. a mixed content error appears when installing wordpress and other systems. https://www.lager5.de/blog/wp-admin/install.php see screenshots for more.

Nginx Proxy Manager Version 2.9.18

Screenshots

Operating System ubuntu 20.04

does anyone have an idea how to solve the problem?

thanks alex

[janxb]

You are forwarding an HTTPS site to an HTTP backend. The backend is then returning an HTML page with resources which are referenced also by HTTP (unsecured), because the backend thinks that you are accessing it via HTTP.

You can either configure wordpress to overwrite your site URL with HTTPS or to use relative URLs without domain and protocol.

Other solution would be enabling SSL on your backend server, but with a self signed certificate. NPM would then be connecting to your self-signed SSL backend, and be responsible for adding a valid certificate to the user.

[gromain]

@janxb I'm encountering the same issue (not with wordpress though).

However, it works fine on other apps that are redirected to http in the background.

Do you mean this is an upstream issue that should be taken with the app creator?

[theraw]

@am999999999 have you tried to add define('FORCE_SSL_ADMIN', true); to wp-config.php?

[github-actions[bot]]

Issue is now considered stale. If you want to keep it open, please comment :+1:

[ernestoacostame]

Any solution for this? I have the same issue..

[user5518]

define( 'FORCE_SSL_ADMIN', true );
$_SERVER['HTTPS'] = 'on';

in wp-config.php solved it for me.

Source: https://wordpress.stackexchange.com/questions/260284/wordpress-behind-proxy-mixed-content#comment614428_260293