Title: Cannot login-cannot modify header information… Last modified: August 31, 2016 --- # Cannot login-cannot modify header information… * [artbar29569](https://wordpress.org/support/users/artbar29569/) * (@artbar29569) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/) * Hello, * I am having an issue with a site where I cannot even get into the admin area. I receive the following error message: * Warning: Cannot modify header information – headers already sent by (output started at /home/southsidedance/public_html/index.php(5) : assert code(1) : eval()’d code:1) in /home/southsidedance/public_html/wp-includes/pluggable.php on line 1196 * The website link is * [http://southsidedance.com/wp-admin/](http://southsidedance.com/wp-admin/) * I would appreciate any help I can get to resolve this. * Thanks in advance! Viewing 7 replies - 1 through 7 (of 7 total) * [Artur Bobinski](https://wordpress.org/support/users/kentonwebdesign/) * (@kentonwebdesign) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975798) * Hi there, * Has there anything been modified theme / template wise? * Thank you. * Thread Starter [artbar29569](https://wordpress.org/support/users/artbar29569/) * (@artbar29569) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975800) * As far as I know, yes. The person that is administering it said she changed a couple of images. * [elmeknouni](https://wordpress.org/support/users/elmeknouni/) * (@elmeknouni) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975801) * Hello, * Try reviewing this codex to solve header problems : [http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F](http://codex.wordpress.org/FAQ_Troubleshooting#How_do_I_solve_the_Headers_already_sent_warning_problem.3F) * [Artur Bobinski](https://wordpress.org/support/users/kentonwebdesign/) * (@kentonwebdesign) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975806) * [@artbar29569](https://wordpress.org/support/users/artbar29569/) try to rename the /wp-content/plugins folder to something like /wp-content/plugins-bak and see if you can access the admin area, if you can then that would mean your admin person updated a plugin which for some reason is conflicting. If she/he has been editing template files, she might of forgotten to close, or format the php code properly leaving things open ended. * Thread Starter [artbar29569](https://wordpress.org/support/users/artbar29569/) * (@artbar29569) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975818) * Hi Artur, * I tried that and the error remains the same. I believe that would be the problem( leaving something open-ended) but I cannot read the index.php as it appears compressed and non manageable… * thank you for your reply * Thread Starter [artbar29569](https://wordpress.org/support/users/artbar29569/) * (@artbar29569) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975827) * hi elmeknouni, this was the first thing I tried! Thanks tho 🙂 * Moderator [t-p](https://wordpress.org/support/users/t-p/) * (@t-p) * [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975865) * Have you also tried: – Flushing any caching plugins you might be running, as well as server and/or browser caches. Also, any op cache or content network cache, as well as Cloudflare, clear those caches. – deactivating ALL (yes all) plugins temporarily to see if this resolves the problem (plugin functions can interfere). If this works, re-activate them individually (one-by-one) to find the problematic plugin(s). – If you can’t get into your admin dashboard, try [resetting the plugins folder](http://codex.wordpress.org/FAQ_Troubleshooting#How_to_deactivate_all_plugins_when_not_able_to_access_the_administrative_menus.3F) by [FTP](http://codex.wordpress.org/FTP_Clients). Sometimes, an apparently inactive plugin can still cause problems. Also remember to deactivate any plugins in the mu-plugins folder (if you have created such folder). The easiest way is to rename that folder to mu-plugins-old. – switching to the unedited default Theme (Twenty Sixteen, etc.) for a moment using the WP dashboard to rule out any theme-specific issue (theme functions can interfere like plugins). If you don’t have access to your admin area, use [FTP ](http://codex.wordpress.org/FTP_Clients), or your web-host’s cPanel or whatever file management application your host provides ( no Dashboard access required). Navigate to /wp-content/themes/ and switch to the default theme by renaming your current theme’s folder by adding “-old” to the end of the folder name. Alternately, you can remove other themes except the default theme. That will force your site to use it. – If all the above steps do not resolve the issue, then try **MANUALLY** updating. Download a fresh copy of the WordPress .zip file to your computer, unzip it, and use that to copy up all files and folders **EXCEPT the wp-config.php file and the /wp-content/ directory.** You may need to delete the old wp-admin and wp-includes folders and files on your server before uploading the new ones. Read the Manual Update directions first. – **Backup: If you haven’t already done, always backup everything (including your database) before doing any actions, just in case something really goes wrong.** Viewing 7 replies - 1 through 7 (of 7 total) The topic ‘Cannot login-cannot modify header information…’ is closed to new replies. * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/) * 7 replies * 4 participants * Last reply from: [t-p](https://wordpress.org/support/users/t-p/) * Last activity: [10 years, 3 months ago](https://wordpress.org/support/topic/cannot-login-cannot-modify-header-information/#post-6975865) * Status: not resolved ## Topics ### Topics with no replies ### Non-support topics ### Resolved topics ### Unresolved topics ### All topics