Title: Cannot Modify Header Information 2.3
Last modified: August 18, 2016

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# Cannot Modify Header Information 2.3

 *  [alibomaye](https://wordpress.org/support/users/alibomaye/)
 * (@alibomaye)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-23/)
 * I am actually having a few problems with my WordPress Blog, but now it seems 
   I can’t even log in to the WP-Admin anymore. I upgraded a couple of days ago 
   and despite the other problems I could still login to the admin, but now I can’t
   even do that:
 * d [this same “d” appears on my actual blog page, where the theme has been erased
   and the “d” appears at the top. The “d” also appears throughout the main admin
   screen and the above the blue ribbon on the admin screen] Warning: Cannot modify
   header information – headers already sent by (output started at /home/bravenew/
   public_html/wp-config.php:25) in /home/bravenew/public_html/wp-includes/pluggable.
   php on line 390
 * The other problems listed are:
 * Also, to publish an entry I have to first click save or save and continue editing
   twice before I can publish directly. When I do click publish or save instead 
   of saving the entry name it just says “”
 * Also I can no longer add my own categories, it used to say in a pink box that
   you have no permission, but now it says “d-1” in that pink box.
 * I also get several errors in reference to the database and lines of PHP files
   when I try to publish, activate or deactivate a plugin or theme after the upgrade.

Viewing 1 replies (of 1 total)

 *  [Jeremy Clark](https://wordpress.org/support/users/jeremyclark13/)
 * (@jeremyclark13)
 * [18 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-23/#post-627354)
 * Your wp-config file has something after the last ?> tag. Edit your file in notepad
   removing any character after the ?> tag. Spaces are characters.

Viewing 1 replies (of 1 total)

The topic ‘Cannot Modify Header Information 2.3’ is closed to new replies.

## Tags

 * [categories](https://wordpress.org/support/topic-tag/categories/)
 * [errors](https://wordpress.org/support/topic-tag/errors/)
 * [header](https://wordpress.org/support/topic-tag/header/)
 * [php](https://wordpress.org/support/topic-tag/php/)
 * [pluggable](https://wordpress.org/support/topic-tag/pluggable/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 1 reply
 * 2 participants
 * Last reply from: [Jeremy Clark](https://wordpress.org/support/users/jeremyclark13/)
 * Last activity: [18 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-23/#post-627354)
 * Status: not resolved

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