Title: Cannot modify header information – headers already
Last modified: August 18, 2016

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# Cannot modify header information – headers already

 *  [danbowling](https://wordpress.org/support/users/danbowling/)
 * (@danbowling)
 * [21 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-headers-already/)
 * When users try to add their comments on my site, they get errors like this:
    
   Warning: Cannot modify header information – headers already sent by (output started
   at /home/danbowl/public_html/blog/wp-content/plugins/wp-preview.php:43) in /home/
   danbowl/public_html/blog/wp-comments-post.php on line 89 I really don’t know 
   what is going on here at all. The URL of an offending comment form is here: [http://blog.danbowling.com/archives/2004/10/17/announcing-daisy-the-new-design/](http://blog.danbowling.com/archives/2004/10/17/announcing-daisy-the-new-design/)
   I can post source if needed. Thanks.

Viewing 1 replies (of 1 total)

 *  Anonymous
 * [21 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-headers-already/#post-101624)
 * [http://www.tamba2.org.uk/wordpress/forum/](http://www.tamba2.org.uk/wordpress/forum/)

Viewing 1 replies (of 1 total)

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 1 reply
 * 2 participants
 * Last reply from: Anonymous
 * Last activity: [21 years, 8 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-headers-already/#post-101624)
 * Status: not resolved

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