Title: “Cannot modify header information” error during install
Last modified: August 19, 2016

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# “Cannot modify header information” error during install

 *  [oversat](https://wordpress.org/support/users/oversat/)
 * (@oversat)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/cannot-modify-header-information-error-during-install/)
 * After uploading everything to my domain, I go to /wp-config/install.php and at
   the top of the page is the following:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /hermes/bosweb/web216/b2165/glo.alkajon/wp-config.php:1) in /hermes/bosweb/
   web216/b2165/glo.alkajon/wp-admin/install.php on line 36
 * I’ve gone through the forums and added ?> tag to the end of wp-config.php and
   it still gives the same message. The following are lines 35 and 36 of install.
   php file:
 * function display_header() {
    header( ‘Content-Type: text/html; charset=utf-8’);
 * What do I do?

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

 *  Moderator [James Huff](https://wordpress.org/support/users/macmanx/)
 * (@macmanx)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/cannot-modify-header-information-error-during-install/#post-1487201)
 * You have unexpected white space (either a space or an entire blank line) on line
   1 of wp-config.php. See this guide for more info:
 * [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)
 *  Thread Starter [oversat](https://wordpress.org/support/users/oversat/)
 * (@oversat)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/cannot-modify-header-information-error-during-install/#post-1487249)
 * THere’s no problem there. I followed the guidline to a T, and I still have the
   error
 *  [viltnieks](https://wordpress.org/support/users/viltnieks/)
 * (@viltnieks)
 * [16 years, 1 month ago](https://wordpress.org/support/topic/cannot-modify-header-information-error-during-install/#post-1487444)
 * This thread should help you : [http://wordpress.org/support/topic/296687?replies=12](http://wordpress.org/support/topic/296687?replies=12)

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

The topic ‘“Cannot modify header information” error during install’ is closed to
new replies.

## Tags

 * [Cannot modify header information](https://wordpress.org/support/topic-tag/cannot-modify-header-information/)
 * [warning](https://wordpress.org/support/topic-tag/warning/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 3 replies
 * 3 participants
 * Last reply from: [viltnieks](https://wordpress.org/support/users/viltnieks/)
 * Last activity: [16 years, 1 month ago](https://wordpress.org/support/topic/cannot-modify-header-information-error-during-install/#post-1487444)
 * Status: not resolved

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