Title: "Cannot modify header" problem (again)
Last modified: August 22, 2016

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# "Cannot modify header" problem (again)

 *  [StanLight](https://wordpress.org/support/users/stanlight/)
 * (@stanlight)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-problem-again/)
 * I’ve got a brand new installation of WP – no plugins, just one page created –
   and I get these errors:
 * Warning: Cannot modify header information – headers already sent by (output started
   at {path on my server} /wp-admin/includes/plugin-install.php:83) in {path on 
   my server} /wp-includes/option.php on line 748
 * and
 * Warning: Cannot modify header information – headers already sent by (output started
   at {path on my server} /wp-admin/includes/plugin-install.php:83) in {path on 
   my server} /wp-includes/option.php on line 749
 * I did enable one of the “bundled themes” but I believe I was getting that error
   even before enabling that theme (which theme I can’t seem to now get rid of but
   that’s a different thread!)
 * No matter what theme I choose I’m getting the above error messages **whenever
   I click on Plugins>Add new in the control panel**.

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

 *  Thread Starter [StanLight](https://wordpress.org/support/users/stanlight/)
 * (@stanlight)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-problem-again/#post-5829720)
 * Update: I deleted everything and started from scratch. Installed a brand new 
   copy of WP and headed straight to Plugins>Add
 * And I get the error messages above.
 * No theme, no plugins, no content. That’s WP straight out of the box.
 * It happens on multiple browsers. It happens even with adblockers etc., turned
   off (even the firewall turned off!)
 * It’s been many years since I installed and used WP. Has it become really screwed
   up in the interim … or am I missing something very simple?
 *  Thread Starter [StanLight](https://wordpress.org/support/users/stanlight/)
 * (@stanlight)
 * [11 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-problem-again/#post-5829732)
 * Note: The message goes away if debug is turned to false. Does this mean there’s
   a problem with WP straight out of the box?

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

The topic ‘"Cannot modify header" problem (again)’ is closed to new replies.

 * 2 replies
 * 1 participant
 * Last reply from: [StanLight](https://wordpress.org/support/users/stanlight/)
 * Last activity: [11 years, 2 months ago](https://wordpress.org/support/topic/cannot-modify-header-problem-again/#post-5829732)
 * Status: not resolved

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