Our previously smooth running membership sign-up process failed leaving me scratching my head after a WP upgrade to 5.5. I had made some changes to the form at the same time and was blaming myself for a silly misconfiguration rather than blaming the upgrade. Reverting to a back up that still had wp at 5.4 has solved the issue for now. Anybody seen similar, got a solution?

Got this on the WP site health dashboard

An active PHP session was detected.

A PHP session was created by a session_start() function call. This interferes with REST API and loopback requests. The session should be closed by session_write_close() before making any HTTP requests.

1 Answer 1


WordPress made changes in v 5.5 that will cause any version of CiviCRM before 5.26 to break. Details are in this post. https://civicrm.org/blog/kcristiano/civicrm-526-and-wordpress-important-notice

You will need to upgrade CiviCRM before WP.

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