Title: Cannot Activate, Fatal Error
Last modified: August 20, 2016

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# Cannot Activate, Fatal Error

 *  [Natetp](https://wordpress.org/support/users/natetp/)
 * (@natetp)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-fatal-error/)
 * Hello,
 * I installed W3-Total_Cache via FTP, when i attempted to activate it, it came 
   up with this:
 * Fatal error: Allowed memory size of 41943040 bytes exhausted (tried to allocate
   30720 bytes) in /var/www/le/lenardproperties.com/public_html/wp-content/plugins/
   w3-total-cache/lib/W3/Plugin/TotalCache.php on line 262
 * ~Nate
 * [http://wordpress.org/extend/plugins/w3-total-cache/](http://wordpress.org/extend/plugins/w3-total-cache/)

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [mydigitalbackgrounds](https://wordpress.org/support/users/mydigitalbackgrounds/)
 * (@mydigitalbackgrounds)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-fatal-error/#post-3534819)
 * Hey there Natetp!
 * Here is your issue: WP Memory Limit 40MB
    Solution: Increasing memory allocated
   to PHP to 64MB
 * There is an easy fix for that issue. Your hosting account is set to allow only
   40MB for PHP controls. You can also see that in your WP admin under system setting.
 * All you have to do is contact your host and have them increase your WP allocated
   memory to 64MB from 40MB. You might try asking them for 96MB as well, but if 
   it is an inexpensive host max they will allow you to have that set to is 64MB.
 * _[ Ad copy removed ]_
 *  [mydigitalbackgrounds](https://wordpress.org/support/users/mydigitalbackgrounds/)
 * (@mydigitalbackgrounds)
 * [13 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-fatal-error/#post-3534824)
 * Here is a short article on that issue if you want to manually increase your PHP
   mem limit using your host’s editor:
 * [http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP](http://codex.wordpress.org/Editing_wp-config.php#Increasing_memory_allocated_to_PHP)

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Cannot Activate, Fatal Error’ is closed to new replies.

 * ![](https://ps.w.org/w3-total-cache/assets/icon-256x256.png?rev=1041806)
 * [W3 Total Cache](https://wordpress.org/plugins/w3-total-cache/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/w3-total-cache/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/w3-total-cache/)
 * [Active Topics](https://wordpress.org/support/plugin/w3-total-cache/active/)
 * [Unresolved Topics](https://wordpress.org/support/plugin/w3-total-cache/unresolved/)
 * [Reviews](https://wordpress.org/support/plugin/w3-total-cache/reviews/)

 * 2 replies
 * 2 participants
 * Last reply from: [mydigitalbackgrounds](https://wordpress.org/support/users/mydigitalbackgrounds/)
 * Last activity: [13 years, 2 months ago](https://wordpress.org/support/topic/cannot-activate-fatal-error/#post-3534824)
 * Status: not resolved