Title: Fatal error: Cannot redeclare register_sidebars
Last modified: August 18, 2016

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# Fatal error: Cannot redeclare register_sidebars

 *  Resolved [polzonoff](https://wordpress.org/support/users/polzonoff/)
 * (@polzonoff)
 * [18 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/)
 * I upgraded S. Widgets but this message showed up:
 * Fatal error: Cannot redeclare register_sidebars() (previously declared in /home/
   restricted/home/polzonoff/public_html/wp-includes/widgets.php:15) in /home/restricted/
   home/polzonoff/public_html/wp-content/plugins/widgets/widgets.php on line 22
 * What do I do?

Viewing 4 replies - 1 through 4 (of 4 total)

 *  [MichaelH](https://wordpress.org/support/users/michaelh/)
 * (@michaelh)
 * [18 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/#post-638608)
 * You need to deactivate and delete the Sidebar Widgets plugin as WordPress 2.3
   has native support for widgets.
 * [Widgets_SubPanel](http://codex.wordpress.org/Widgets_SubPanel)
 *  [Jeremy Clark](https://wordpress.org/support/users/jeremyclark13/)
 * (@jeremyclark13)
 * [18 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/#post-638609)
 * You don’t need the widget plugin for versions above 2.x, widget functionality
   is now included in the core. Deactivate the plugin.
 *  Thread Starter [polzonoff](https://wordpress.org/support/users/polzonoff/)
 * (@polzonoff)
 * [18 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/#post-638651)
 * Thanks. I’m so stupid…!
 * Best for all
 *  [smithveg](https://wordpress.org/support/users/smithveg/)
 * (@smithveg)
 * [17 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/#post-638901)
 * Oh, I face the same problem previosly.
    I just have to delete the sidebar widget
   plugin since i am using 2.x wordpress.

Viewing 4 replies - 1 through 4 (of 4 total)

The topic ‘Fatal error: Cannot redeclare register_sidebars’ is closed to new replies.

## Tags

 * [widgets](https://wordpress.org/support/topic-tag/widgets/)

 * In: [Installing WordPress](https://wordpress.org/support/forum/installation/)
 * 4 replies
 * 4 participants
 * Last reply from: [smithveg](https://wordpress.org/support/users/smithveg/)
 * Last activity: [17 years, 7 months ago](https://wordpress.org/support/topic/fatal-error-19/#post-638901)
 * Status: resolved

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