Title: Warning Message: Cannot modify Header Information
Last modified: August 31, 2016

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# Warning Message: Cannot modify Header Information

 *  [wlengfelder](https://wordpress.org/support/users/wlengfelder/)
 * (@wlengfelder)
 * [10 years, 2 months ago](https://wordpress.org/support/topic/warning-message-cannot-modify-header-information/)
 * In the Dashboard i get this Warning Message:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/www/wordpress/wp-admin/includes/template.php:1947) in /home/www/wordpress/
   wp-includes/pluggable.php on line 1228
 * URL: [http://www.francis-cosmetics.de](http://www.francis-cosmetics.de)
 * Whats wrong?
 * Regards Wolfgang
 * [https://wordpress.org/plugins/opcache/](https://wordpress.org/plugins/opcache/)

Viewing 1 replies (of 1 total)

 *  [Adam Chahl](https://wordpress.org/support/users/adamchahl/)
 * (@adamchahl)
 * [9 years, 4 months ago](https://wordpress.org/support/topic/warning-message-cannot-modify-header-information/#post-8652474)
 * Also having this issue, did you find a resolution?

Viewing 1 replies (of 1 total)

The topic ‘Warning Message: Cannot modify Header Information’ is closed to new replies.

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 * 1 reply
 * 2 participants
 * Last reply from: [Adam Chahl](https://wordpress.org/support/users/adamchahl/)
 * Last activity: [9 years, 4 months ago](https://wordpress.org/support/topic/warning-message-cannot-modify-header-information/#post-8652474)
 * Status: not resolved