Title: Can't Login – wrong parameter count and cannot modify header information errors
Last modified: August 21, 2016

---

# Can't Login – wrong parameter count and cannot modify header information errors

 *  Resolved [JohnCleary](https://wordpress.org/support/users/johncleary/)
 * (@johncleary)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cant-login-wrong-parameter-count-and-cannot-modify-header-information-errors/)
 * Can someone please offer me some help with an issue that just occurred on my 
   website.
 * When I try to log in I get the following errors…
 * Warning: Wrong parameter count for session_destroy() in /homepages/2/d272873542/
   htdocs/wordpress/wp-includes/plugin.php on line 406
 * Warning: Cannot modify header information – headers already sent by (output started
   at /homepages/2/d272873542/htdocs/wordpress/wp-includes/plugin.php:406) in /homepages/
   2/d272873542/htdocs/wordpress/wp-includes/pluggable.php on line 876
 * Does anyone have any ideas on the cause and/or solution please? Web site is running
   normally for visitors…

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

 *  [Krishna](https://wordpress.org/support/users/1nexus/)
 * (@1nexus)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cant-login-wrong-parameter-count-and-cannot-modify-header-information-errors/#post-3891631)
 * Deactivate **all** plugins by renaming them via FTP/hosting control panel and
   see if you can login. Also review:
    [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)
 *  Thread Starter [JohnCleary](https://wordpress.org/support/users/johncleary/)
 * (@johncleary)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cant-login-wrong-parameter-count-and-cannot-modify-header-information-errors/#post-3891633)
 * Thanks Krishna…it was a plugin. All working now Thanks again.
 *  [Krishna](https://wordpress.org/support/users/1nexus/)
 * (@1nexus)
 * [12 years, 10 months ago](https://wordpress.org/support/topic/cant-login-wrong-parameter-count-and-cannot-modify-header-information-errors/#post-3891635)
 * Great! Nice to know that your site is working fine!

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

The topic ‘Can't Login – wrong parameter count and cannot modify header information
errors’ is closed to new replies.

## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Krishna](https://wordpress.org/support/users/1nexus/)
 * Last activity: [12 years, 10 months ago](https://wordpress.org/support/topic/cant-login-wrong-parameter-count-and-cannot-modify-header-information-errors/#post-3891635)
 * Status: resolved

## Topics

### Topics with no replies

### Non-support topics

### Resolved topics

### Unresolved topics

### All topics