Title: Cannot modify header information
Last modified: August 21, 2016

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# Cannot modify header information

 *  [Motley9735](https://wordpress.org/support/users/motley9735/)
 * (@motley9735)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-someone-please-help/)
 * Hi all,
 * Desperately hoping someone can help me out. I’m fairly new to WP and this morning
   I updated to 3.6 as well as trying to install a slider plugin (which failed due
   to files size).
 * I have then tried to log back in to WP a few hours later an am served with quite
   a few
 * Warning: Cannot modify header information – headers already sent by (output started
   at XXXXXXXX/comments.php:15) in XXXXXXXX/public_html/wp-login.php on line 384
 * I’ve tried looking at the WP official FAQ troubleshooting guide and this tells
   me that this error is on line 15 in the comments.php file. I’ve tried removing
   blank lines around here but to no joy.
 * Would someone kindly mind taking a look at the code as I can’t see anything wrong(
   but my php knowledge is non existent)? I’ve pasted it here;
    [http://pastebin.com/CYhjR4Ty](http://pastebin.com/CYhjR4Ty)
 * Thanks in advance
    Andy

Viewing 3 replies - 1 through 3 (of 3 total)

 *  Moderator [Jan Dembowski](https://wordpress.org/support/users/jdembowski/)
 * (@jdembowski)
 * Forum Moderator and Brute Squad
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-someone-please-help/#post-4011788)
 * [Give this a read](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F)
   and check your `wp-config.php` file.
 * You may need to manually delete that slider plugin via FTP or whatever file management
   tools your host has provided you with.
 *  Thread Starter [Motley9735](https://wordpress.org/support/users/motley9735/)
 * (@motley9735)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-someone-please-help/#post-4011791)
 * Thanks for commenting. This slider plugin wasn’t actually uploaded in the end
   so this isn’t the problem.
 * Are you able to see any of these ‘mysterious’ blank spaces from the pastebin 
   code I posted?
 *  Thread Starter [Motley9735](https://wordpress.org/support/users/motley9735/)
 * (@motley9735)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-someone-please-help/#post-4011792)
 * Had already read the troubleshooting guide – where it says to hold the delete
   key for 15 seconds, when I do this it just ends up deleting code, which obviously
   I don’t want.

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Cannot modify header information’ is closed to new replies.

## Tags

 * [php](https://wordpress.org/support/topic-tag/php/)
 * [troubleshooting](https://wordpress.org/support/topic-tag/troubleshooting/)

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Motley9735](https://wordpress.org/support/users/motley9735/)
 * Last activity: [12 years, 10 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-someone-please-help/#post-4011792)
 * Status: not resolved

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