Comments on: Wordpress Error: Warning: Cannot modify header information

By: Richard

Richard — Wed, 21 Oct 2009 07:30:02 +0000

Got to say thank you, yesterday i locked down my site, and had to make small changes in the wp-config file

any way today i had this error showing,

then

found you on google, made the small change of deleting the space

and bingo my site is now up and running correctly..

http://www.guesthousepattaya.com

Thank you

By: nabtron

nabtron — Sun, 27 Sep 2009 06:57:59 +0000

the error is in the file that is being said in the error first line. this is caused by extra spaces before or after the php code

check out the explaination here:

http://tech.nabtron.com/wordpress-plugin-error-warning-session_start-function-session-start-cannot-send-session-cache-limiter-headers-already-sent-output-started-at/525/

By: Rob Butz

Rob Butz — Thu, 03 Sep 2009 19:04:53 +0000

Hi folks. Well after looking at the error info, it looks as if the issue is NOT my wp-config.php or wp-login.php files but my themes functions.php file. I removed spaces at the end of that one.

It makes sense as that could’ve been the only thing I might have modified and my site was “suddenly” not working.

So.. checking your theme files functions.php is also recommended.

Cheers

R o B

By: Sergey Rusak

Sergey Rusak — Wed, 12 Aug 2009 20:40:28 +0000

Thank you, it was easy. It took me 3 hours to figure out untill I found your post.

By: Marius

Marius — Mon, 10 Aug 2009 14:47:55 +0000

Hi, I’m having the same problem with BBPress, but theres no extra spaces in that file. Here is the errormessage:

Warning: Cannot modify header information – headers already sent by (output started at /home/michael/public_html/forum/bb-config.php:1) in /home/michael/public_html/forum/bb-includes/backpress/class.wp-auth.php on line 273

By: Sverre

Sverre — Mon, 10 Aug 2009 04:19:58 +0000

Thanks! that was the missing info I needed

By: TG

TG — Fri, 31 Jul 2009 00:53:49 +0000

Thanks! This was exactly the problem I had, and such a sneaky error to detect!

By: Energy Care

Energy Care — Wed, 01 Jul 2009 19:42:31 +0000

Thanks!! this helped a bunch!! the problem ended up being a plugin i was using…random image generator…not sure what was not working, just deleted it and now im up and running!

By: claudia

claudia — Wed, 03 Jun 2009 03:01:58 +0000

You have saved my hide! Thanks a billion! Now, how tha heck did that happen, I will never know…

By: josh

josh — Tue, 05 May 2009 01:47:21 +0000

Thanks for posting this, unfortunately the spaces wasn’t the problem but I saw a comment here about google analytics, so I removed the plugin and it works. thanks hongkiat & beaulife!

By: kristine

kristine — Wed, 29 Apr 2009 08:10:48 +0000

i did it! :) figured out eventually…i had like 3 or 4 files that needed the editing and that was it :)

thanks again for this info:)

By: kristine

kristine — Wed, 29 Apr 2009 07:50:51 +0000

I messed up my upgrade :( Please help. I tried doing what you said here…but to no avail…I can’t login to wp-admin too :(

Warning: Cannot modify header information – headers already sent by (output started at /homepages/6/d262576222/htdocs/wp-settings.php:630) in /homepages/6/d262576222/htdocs/wp-includes/pluggable.php on line 850

By: Martijn

Martijn — Fri, 27 Mar 2009 11:54:54 +0000

Tnx! That solved it!

By: Michael L.

Michael L. — Thu, 26 Mar 2009 10:36:31 +0000

Wow, no friggin wayyyy. I have tried everything……. just as well as you all have im sure. And the freakin spaces were the problem. Im not sure which file, I went through a lot of em and almost cant believe that no more errors. :-) What a relief

By: Paul

Paul — Sun, 22 Mar 2009 13:55:26 +0000

Ja, genau so hatte ich es auch. Aber nun ist das Problem weg :)

By: Girish

Girish — Mon, 16 Mar 2009 11:46:34 +0000

Hi,

When i am adding or deleting post in wordpres admin i am getting below error.

Warning: Cannot modify header information – headers already sent by (output started at /home/content/d/i/c/diclemen18/html/wp/wp-admin/includes/file.php:1539) in /home/content/d/i/c/diclemen18/html/wp/wp-includes/pluggable.php on line 850

Can anyone please help me.

Thanks

By: Mike Pantoja

Mike Pantoja — Mon, 16 Mar 2009 03:57:53 +0000

Holy Crap! All I had to do was check each file that showed up in the headers and TA DA! Problem solved. Thank you so much for posting this.

By: Joreel

Joreel — Fri, 13 Mar 2009 06:18:55 +0000

Warning: Cannot modify header information in Wordpress

I encountered the same problem… but I fixed using these following methods..

http://emag.joreeldiaz.com/warning-cannot-modify-header-information-in-wordpress/

By: Bumpas

Bumpas — Fri, 13 Mar 2009 05:18:43 +0000

You’re my hero. Thanks. It was so simple. I didn’t even see it.

By: Lindsey

Lindsey — Sun, 15 Feb 2009 13:18:42 +0000

Thanks so much, this really helped me and saved a lot of time!