Title: Warning: Cannot modify header information
Last modified: August 19, 2016

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# Warning: Cannot modify header information

 *  Resolved [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/)
 * i have got passed the password screen and when i log in i get this screen, any
   ideas or help please? i’m new to wordpress just started today. uploaded files
   to ftp filezilla and followed the 5 min step guide so far
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/madforum/wp-config.php:1) in /home/*******/public_html/
   madforum/wp-login.php on line 290
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/madforum/wp-config.php:1) in /home/*******/public_html/
   madforum/wp-login.php on line 302
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/bloocouk/public_html/madforum/wp-config.php:1) in /home/bloocouk/public_html/
   madforum/wp-includes/pluggable.php on line 662
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/madforum/wp-config.php:1) in /home/bloocouk/public_html/
   madforum/wp-includes/pluggable.php on line 663
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/bloocouk/public_html/madforum/wp-config.php:1) in /home/*******/public_html/
   madforum/wp-includes/pluggable.php on line 664
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/madforum/wp-config.php:1) in /home/*******/public_html/
   madforum/wp-includes/pluggable.php on line 865

Viewing 8 replies - 1 through 8 (of 8 total)

 *  [Samuel B](https://wordpress.org/support/users/samboll/)
 * (@samboll)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353404)
 * you have a blank space or carriage return at the start of the `wp-config.php`
   file
 * review
    [http://codex.wordpress.org/Answers-Troubleshooting#Headers_already_sent](http://codex.wordpress.org/Answers-Troubleshooting#Headers_already_sent)
 *  Thread Starter [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353538)
 * ok thx for the reply, i never altered that part of the file, is it something 
   that just happens? ill read the link and try and sort it out
 * Thanks again
 *  Thread Starter [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353543)
 * ok the site works but when i log in it doesnt still shows all them errors, going
   to work on it now
 *  [Samuel B](https://wordpress.org/support/users/samboll/)
 * (@samboll)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353595)
 * then you likely have a plugin messing up
    deactivate them then reactivate one
   by one until you find the offender
 *  Thread Starter [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353630)
 * on the login screen i got
    Warning: Cannot modify header information – headers
   already sent by (output started at /home/*******/public_html/madforum/wp-login.
   php:1) in /home/*******/public_html/madforum/wp-login.php on line 290
 * Warning: Cannot modify header information – headers already sent by (output started
   at /home/*******/public_html/madforum/wp-login.php:1) in /home/********/public_html/
   madforum/wp-login.php on line 302
 * when i login i get a screen with about 6 of them all saying
    …..wp-login.php:
   1
 * i have no spaces before the <?php and its a clean install i havent installed 
   any plugins or anything
 *  Thread Starter [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353637)
 * ok ignore last message, i reinstalled and it seems to work however my wordpress
   has been setup on a subdomian called madforum i have deleted it from there and
   deleted madforum from c panel and put the wordpress on sub domian called wordpress,
   but when i login it takes me back to the madforum wp log in page which doesnt
   exist now, how do i tell it to go to the wordpress domain?
 * thx
 *  [Samuel B](https://wordpress.org/support/users/samboll/)
 * (@samboll)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353690)
 * use one of these methods to correct your url’s
    [http://codex.wordpress.org/Changing_The_Site_URL](http://codex.wordpress.org/Changing_The_Site_URL)
 *  Thread Starter [rovers31](https://wordpress.org/support/users/rovers31/)
 * (@rovers31)
 * [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353720)
 * Thanks alot, all is well now!

Viewing 8 replies - 1 through 8 (of 8 total)

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

## Tags

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

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 8 replies
 * 2 participants
 * Last reply from: [rovers31](https://wordpress.org/support/users/rovers31/)
 * Last activity: [16 years, 3 months ago](https://wordpress.org/support/topic/warning-cannot-modify-header-information-41/#post-1353720)
 * Status: resolved

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