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

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# Cannot modify header information

 *  Resolved [sysdevuser](https://wordpress.org/support/users/sysdevuser/)
 * (@sysdevuser)
 * [19 years, 12 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-1-3/)
 * While installing and on first run I am getting this message:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/rioymarc/public_html/cocosite/wordpress/wp-config.php:47) in /home/rioymarc/
   public_html/cocosite/wordpress/wp-login.php on line 9
 * I don’t know what it means or how to fix whatever should be fixed. Went through
   the installation forum up to page 10 but did not find anything about this.
 * Any help? References?
 * Thank,
 * Juan Castro

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

 *  Thread Starter [sysdevuser](https://wordpress.org/support/users/sysdevuser/)
 * (@sysdevuser)
 * [19 years, 12 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-1-3/#post-406754)
 * Found something here [http://codex.wordpress.org/Answers-Trouble_Shooting](http://codex.wordpress.org/Answers-Trouble_Shooting).
 * Going to try something.
 *  Thread Starter [sysdevuser](https://wordpress.org/support/users/sysdevuser/)
 * (@sysdevuser)
 * [19 years, 12 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-1-3/#post-406756)
 * Well, deleted a blank line 9 on wp-login.php but still got:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/rioymarc/public_html/cocosite/wordpress/wp-config.php:47) in /home/rioymarc/
   public_html/cocosite/wordpress/wp-login.php on line 9
 * Next I went to config.php to see line 47 and that was it. Config.php has only
   46 lines of code. Line 47 was an extra blank line. Deleted than one and the message
   went away.
 * juan

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

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## Tags

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

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 2 replies
 * 1 participant
 * Last reply from: [sysdevuser](https://wordpress.org/support/users/sysdevuser/)
 * Last activity: [19 years, 12 months ago](https://wordpress.org/support/topic/cannot-modify-header-information-1-3/#post-406756)
 * Status: resolved

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