session_regenerate_id(): Session object destruction failed is the error i'm receiving after attempting to log in.

I just updated to Ubuntu 16.04LTS using PHP7 and php-memcached.

Is there a fix for this in a craft version? I'm on version 2.6.2791 and this behavior is still broken. I cannot seem to find a workaround besides overwriting Yii with a workaround myself.

  • Any reason why you're not using the current version of Craft (which is 2.6.2993)? 2.6.2791 was released over a year ago and Craft is currently using the latest version of yii, it should already be patched when you upgrade. Voting to close this. Oct 24 '17 at 2:56
  • @RitterKnight I was unable to update directly to 2993 from 2791. I updated to 2951 and it was still occurring. I'm planning to update to 2993 after this release next week.
    – Exziled
    Oct 24 '17 at 14:40
  • Did you do a manual update or use the CP? I do believe there might have been one or two updates that required a manual update. Oct 25 '17 at 15:28

I saw a few work arounds for this here, hopefully it helps: https://github.com/yiisoft/yii/issues/2376


I resolved this by updating core YII functionality that was not working suddenly with Ubuntu 16.04 and the latest version of php 7.0.

CHttpSession::regenerateID changed to:

public function regenerateID($deleteOldSession=false)
    if(session_id() === '')

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