Title: Error when deactivating plugin
Last modified: March 3, 2017

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# Error when deactivating plugin

 *  [Martin Larsson](https://wordpress.org/support/users/riddler777/)
 * (@riddler777)
 * [9 years, 1 month ago](https://wordpress.org/support/topic/error-when-deactivating-plugin/)
 * On my site I have multiple blogs and two of them use the plugin Revolution Slider
   version 5.1.1. One of these sites no longer needs this slider but I cannot deactivate
   the plugin. When I do I get this error message:
    `Warning: in_array() expects
   parameter 2 to be array, null given in /storage/content/.../admin/revslider-admin.
   class.php on line 389`
 * Then I tried to disable the plugin by updating the option_value in `wp_xx_options`
   table as described here: [https://www.ostraining.com/blog/wordpress/disable-a-wordpress-plugin/](https://www.ostraining.com/blog/wordpress/disable-a-wordpress-plugin/).
   When I do that the value is updated for less than a minute. When I refresh the
   page in phpmyadmin the value is reset to the original! How is this possible!?
 * On the network level I am using **W3 Total Cache** and **WP-Optimize** to speed
   up the site. Can this case the update database problem?
 * Also, I am unable to update the Revolution Slider plugin because it is a commercial
   plugin and I have lost the license key. It was purchased by another user who 
   is very hard to get in contact with.
    -  This topic was modified 9 years, 1 month ago by [Martin Larsson](https://wordpress.org/support/users/riddler777/).

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

 *  [Michael Kracke](https://wordpress.org/support/users/krack3/)
 * (@krack3)
 * [9 years, 1 month ago](https://wordpress.org/support/topic/error-when-deactivating-plugin/#post-8871841)
 * You can also remove the plugin via ftp by deleting it from the wp-contents/plugins.
 * This may leave some residue behind in the database, but will get the plugin removed.
 *  Thread Starter [Martin Larsson](https://wordpress.org/support/users/riddler777/)
 * (@riddler777)
 * [9 years, 1 month ago](https://wordpress.org/support/topic/error-when-deactivating-plugin/#post-8878288)
 * As I mentioned in my question, there are one site that uses the plugin so I am
   unable to remove the plugin.
 *  [Michael Kracke](https://wordpress.org/support/users/krack3/)
 * (@krack3)
 * [9 years, 1 month ago](https://wordpress.org/support/topic/error-when-deactivating-plugin/#post-8879493)
 * My apologies, I miss-read your post. That does make is tricky if you are gambling
   with losing a licence key.
 * Have you tried to contact support for the Revolution Slider? [https://www.themepunch.com/support-center/](https://www.themepunch.com/support-center/)

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

The topic ‘Error when deactivating plugin’ is closed to new replies.

## Tags

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

 * In: [Fixing WordPress](https://wordpress.org/support/forum/how-to-and-troubleshooting/)
 * 3 replies
 * 2 participants
 * Last reply from: [Michael Kracke](https://wordpress.org/support/users/krack3/)
 * Last activity: [9 years, 1 month ago](https://wordpress.org/support/topic/error-when-deactivating-plugin/#post-8879493)
 * Status: not resolved

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