Title: Warning: Cannot modify header
Last modified: November 1, 2016

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# Warning: Cannot modify header

 *  [coevta](https://wordpress.org/support/users/coevta/)
 * (@coevta)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-5/)
 * Hello, when I try to log into my site, I get this error:
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/coevtaor/public_html/wp-content/themes/Avada/templates/header.php:15)
   in /home/coevtaor/public_html/wp-includes/pluggable.php on line 1174
 * When I open the header.php in Dreamweaver line 15 is blank???
 * How can I fix this so I can log back in?

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

 *  [ThemeSumo](https://wordpress.org/support/users/themesumo/)
 * (@themesumo)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-5/#post-8382781)
 * Have you tried disabling all of your plugins?
 * As per the [Forum Welcome](https://codex.wordpress.org/Forum_Welcome#Commercial_Products),
   you should be requesting assistance from where you purchased the theme as we’re
   not provided commercial products so are unable to offer assistance.
 * [ThemeFusion Support](https://theme-fusion.com/support/)
 *  Thread Starter [coevta](https://wordpress.org/support/users/coevta/)
 * (@coevta)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-5/#post-8382786)
 * Ok, thank you!!!
 *  [brechtryckaert](https://wordpress.org/support/users/brechtryckaert/)
 * (@brechtryckaert)
 * [9 years, 7 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-5/#post-8385078)
 * In quite a number of cases, you can fix the “Cannot modify header information–
   headers already sent”-error by enabling “output_buffering” in your PHP configuration.
   Might be worth a shot.

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

The topic ‘Warning: Cannot modify header’ is closed to new replies.

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 3 participants
 * Last reply from: [brechtryckaert](https://wordpress.org/support/users/brechtryckaert/)
 * Last activity: [9 years, 7 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-5/#post-8385078)
 * Status: not resolved

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