Title: Can’t enable object cache
Last modified: February 3, 2025

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# Can’t enable object cache

 *  Resolved [pcullum](https://wordpress.org/support/users/pcullum/)
 * (@pcullum)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/cant-enable-object-cache/)
 * Running version 2.1.51. Page cache seems to be working correctly.
 * On the other hand, when I try to turn on object cache, the icons change as expected,
   but when I click Save, the slider slides back left and turns red again. Any suggestions?

Viewing 10 replies - 1 through 10 (of 10 total)

 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18281101)
 * Please allow me some time to investigate.
   Did you install/update from WP directory?
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18281367)
 * reason is an outdated .js file, can you please update to 2.1.52 and reload ?
 *  Thread Starter [pcullum](https://wordpress.org/support/users/pcullum/)
 * (@pcullum)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18285830)
 * I installed 2.1.59, then I followed your directions. The settings were saved.
   But also, an error message was displayed: 
   “The Cache settings are inconsistent,
   please save again.”
 * I saved again, but the message is still present. What do I try now?
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 2 months ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18285845)
 * Please leave it as is for now, i am working on it.
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 1 month ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18292789)
 * Please update to Build 2.1.60 and let me know.
 *  Thread Starter [pcullum](https://wordpress.org/support/users/pcullum/)
 * (@pcullum)
 * [1 year, 1 month ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18340240)
 * I installed 2.1.72. I restarted WordPress. I went to [https://www.imnewswatch.com/wp-admin/admin.php?page=atec_wpca](https://www.imnewswatch.com/wp-admin/admin.php?page=atec_wpca)
   There I see “Object Cache is inactive.” so I click the slider to turn it on and
   click “Save”
 * Then, I get the error message “The cache settings are inconsistent (KEY_SALT 
   is not defined), please click save to run the self-fix routine.” so I click Save
   again.
 * WordPress gives me the error “There has been a critical error on this website.
   Please check your site admin email inbox for instructions. If you continue to
   have problems, please try the [support forums](https://wordpress.org/support/forums/).”
   
   The error isn’t as critical as WP says, apparently because I can back out of 
   it and proceed as if nothing happened. As long as I don’t try to activate the
   object cache, I can do any back end work I need to to.
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 1 month ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18340543)
 * Thank you, please update to 2.1.79 an let me know.
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year, 1 month ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18348665)
 * If you expierence issues with the latest update v2.1.84, please rename or delete
   the file /wp-content/object-cache.php, reload and enable object caching again.
   This should solve the issue.
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [1 year ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18387052)
 * I’ve just uploaded v2.1.87, give it a try if you want.
 *  Plugin Author [docjojo](https://wordpress.org/support/users/docjojo/)
 * (@docjojo)
 * [9 months, 3 weeks ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18518613)
 * New version is available, please update and let me know.

Viewing 10 replies - 1 through 10 (of 10 total)

The topic ‘Can’t enable object cache’ is closed to new replies.

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 * 10 replies
 * 2 participants
 * Last reply from: [docjojo](https://wordpress.org/support/users/docjojo/)
 * Last activity: [9 months, 3 weeks ago](https://wordpress.org/support/topic/cant-enable-object-cache/#post-18518613)
 * Status: resolved