Support » Fixing WordPress » Can't login to the dashboard

  • I just upgrade to 3.8 and upgraded my database to the latest php version and now I can’t login… I upgraded all my sites which is many and I am receiving this message on only two of them? They are using the same theme – I have checked both config.php files and there are no spaces that I can find?? Any advise?? The two sites that are giving me trouble I am in the process of merging with another site – I need to create the wxr file and I am unable to login… UGH – is there another way to get the wxr file?

    Warning: Cannot modify header information – headers already sent by (output started at /home/wolfsdesigns2/ in /home/wolfsdesigns2/ on line 9

    Warning: Cannot modify header information – headers already sent by (output started at /home/wolfsdesigns2/ in /home/wolfsdesigns2/ on line 896

Viewing 15 replies - 1 through 15 (of 15 total)
  • I have renamed the plugins folder, created a new config.php file AND reinstalled wp 3.8 and I am STILL receiving this error….

    Warning: Cannot modify header information – headers already sent by (output started at /home/mountainmanjournals/ in /home/mountainmanjournals/ on line 896

    Have you made sure there is no empty white space at the top of the wp-config file?

    Yes – I actually created a new one via the config-sample.php

    I have two sites with the same problem…. Didn’t have any troubles until I upgraded… But I upgraded the php and the wp at pretty much the same time so not sure if it is a combination, but I also did the same thing with 3 other sites and I am not having struggles with them… It is very weird…

    any other recommendatioms?

    Did you go to the top of the wp-config file and backspace out any spaces even if not visible?

    Did you replace manually all files and folders EXCEPT wp-content, wp-config and .htaccess from a new download of WP – after deleting the old copies of the files/folders to be replaced?

    I have to agree that
    wpconfig is normally what spits back that headers already sent error

    if you updated all your core files and are using a default theme with no plugins running … idk .. could be file corruption

    Yes to ALL of the above??

    EESH that would be BAD!!! I am not using a default theme…. Graphene I think…. But yes I renamed the plugins folder manually installed all the core files and took the core config file and edited in my settings very carefully and then still checked that for spaces…

    I have 5 sites running the graphene – each with different plugins though and 3 out of the 5 are ok – just these two…

    It is really unusual… I used the auto update on them….

    If my file is corrupt – is there a way to get a dump from the database same as what the export wpr would create so that I can import them into my other wp website which is what I need to do anyway, but I can’t get in the dashboard to make a few changes and then export… UGH….

    Try switching to a default theme. AND did you manually replace the files (not auto-update)?

    I initially upgraded thru the dashboard of my website. The frontend appeared to be fine, but I was then unable to login in to the dashboard.

    I then manually updated to see if that would make a difference.

    I have never had to switch themes via the database. Could you offer some guidance?


    Just use FTP or Cpanel to rename your theme and while you are theme rename the plugins folder – so you should then have:


    Not sure if that will make any difference, but worth a try :)!

    I tried renaming the theme and the front end of the website went to a fully white screen and the backend still had the same message.

    I will try one more time with the config.php and recreate….

    Any other suggestions?



    Forum Moderator

    Re-upload a fresh, unpacked, copy of the Twenty Fourteen folder to wp-content/themes using FTP or whatever file management application your host provides.

    Twenty Fourteen

    Do you have a default theme in that themes folder? Sounds like this may be a server issue – have you checked to see what the error logs for the server are showing?

Viewing 15 replies - 1 through 15 (of 15 total)
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