Warning : cannot modify header information

Please give this link a read.

https://codex.www.ads-software.com/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F

I’m affraid of making things worse if I modify some code lines without knowing what I’m precisely doing… Ask me if you need other informations that could help !

Try this: before you make any changes, save a copy of your wp-config.phpfile to wp-config-SAVE.php. That way if you make a mistake editing that file you can go back to the way it was via that copy.

Once that copy is saved (really, please make that copy) then do the following:

1. Copy wp-config-sample.php to wp-config.php. That will overwrite the existing file (please make that backup copy first!)
2. Once that’s done use the most plain text editor you have and edit that new wp-config.php file. In Windows notepad is perfect for this.
3. In that file carefully edit the values for these lines. Use the data from your wp-config-SAVE.php file.

   // ** MySQL settings - You can get this info from your web host ** //
   /** The name of the database for WordPress */
   define('DB_NAME', 'database_name_here');
   
   /** MySQL database username */
   define('DB_USER', 'username_here');
   
   /** MySQL database password */
   define('DB_PASSWORD', 'password_here');
   
   /** MySQL hostname */
   define('DB_HOST', 'localhost');

   Once that’s done save your file.

See if you can get into your site after that.

Hi Jan, and thank you for your quick answer.
I red this page a few hours ago, but it didn’t resolve my issue.

I just follow your instructions, creating wp-config-SAVE.php, overwriting my wp-config.php with wp-config-sample.php, and editing my database informations … but it still doesn’t work, sorry :/

Any other idea ?

Thank you,
Have a nice day.

It also can be your theme so try these steps:

1. Using FTP or whatever file management tools your host has provided you with navigate to the wp-content/themes directory.
2. Once there locate and backup the enfold directory. Don’t delete it (yet) but make a copy just in case.
3. Once you have the backup of that enfold directory now delete it. Just that one enfold directory and nothing else.
4. Try and re-login to your WordPress dashboard via https://s534383376.onlinehome.fr/wp-admin/themes.php and see what it says.

Please make sure if you make that backup. These steps should default you to the Twenty Fourteen theme and you may be able to get in after that.

Hi,

So I just did what you told me, and here is the answer I get :

Warning: Cannot modify header information – headers already sent by (output started at /homepages/45/d534383371/htdocs/wp-config.php:1) in /homepages/45/d534383371/htdocs/wp-includes/pluggable.php on line 1121

Do you think deleting everything (database and ftp content) and installing everything again could be a solution ?
The website is currently empty (no pages, posts, or anything else), so it’s not a big deal. But I’d like to understand where does this problem come from, and how to fix it !

Thank you for your help,
best regards,
Noemie ??

That’s a little harsh but yes that should work.

If you do go that route can you let the wp-config.php file be created by the install script?

https://s534383376.onlinehome.fr/wp-admin/install.php

That should generate a problem free file if that’s the issue.

STOP!
By my reading it is the “Ithemes security” plugin that is causing the problem. Disable this plugin via FTP and see what happens.

I’m not disagreeing with you but how did you arrive at iThemes security plugin? The plugin is there on the site so it could be that somehow.

https://s534383376.onlinehome.fr/wp-content/plugins/better-wp-security/readme.txt

Jan, at the end of the first post it says:

These issues appears just after I tried to improve the security of the (future) website, with the “Ithemes security” plugin.

When I see “JUST AFTER”, I think it may be a cause.

I totally missed that. Good catch. ??

Hi !
Thanks for your answers, but it didn’t fixed the issue :/
I really don’t understand where the problem comes from…

I think I’ll delete everything and then re-install it.