Title: Error message every time I post:  Cannot modify header information …
Last modified: August 19, 2016

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# Error message every time I post: Cannot modify header information …

 *  [dacktyl](https://wordpress.org/support/users/dacktyl/)
 * (@dacktyl)
 * [16 years, 9 months ago](https://wordpress.org/support/topic/error-message-every-time-i-post-cannot-modify-header-information/)
 * Every time I try to post, I get this error message:
    Warning: Cannot modify header
   information – headers already sent by (output started at /home/content/d/a/c/
   loginname/html/_BlogName/wp-includes/post-template.php:169) in /home/content/
   d/a/c/loginname/html/_BlogName/wp-includes/pluggable.php on line 865
 * The post goes through and publishes, but this message make working a bit clunky
   and frustrating.
 * I am not a coder. Can someone help me fix this?

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

 *  [esmi](https://wordpress.org/support/users/esmi/)
 * (@esmi)
 * [16 years, 9 months ago](https://wordpress.org/support/topic/error-message-every-time-i-post-cannot-modify-header-information/#post-1200644)
 * [http://codex.wordpress.org/Answers-Trouble_Shooting#Headers_already_sent](http://codex.wordpress.org/Answers-Trouble_Shooting#Headers_already_sent)
   
   [http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F)
 *  [Samuel B](https://wordpress.org/support/users/samboll/)
 * (@samboll)
 * [16 years, 9 months ago](https://wordpress.org/support/topic/error-message-every-time-i-post-cannot-modify-header-information/#post-1200646)
 * you have a plugin messing with you
    deactivate one by one until you find offender

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

The topic ‘Error message every time I post: Cannot modify header information …’ 
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## Tags

 * [cannot modify header](https://wordpress.org/support/topic-tag/cannot-modify-header/)
 * [error message](https://wordpress.org/support/topic-tag/error-message/)
 * [post error](https://wordpress.org/support/topic-tag/post-error/)

 * 2 replies
 * 3 participants
 * Last reply from: [Samuel B](https://wordpress.org/support/users/samboll/)
 * Last activity: [16 years, 9 months ago](https://wordpress.org/support/topic/error-message-every-time-i-post-cannot-modify-header-information/#post-1200646)
 * Status: not resolved

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