Failed to activate the WPML Multilingual CMS

This thread is resolved. Here is a description of the problem and solution.

Problem:
You are trying to activate the WPML Multilingual CMS plugin, but the installation process gets stuck and does not complete. When forcing activation, you encounter a fatal error indicating a redeclaration of the function

initialize_wpml_cache_factory()

.
Solution:
First, ensure you are using the latest version of WPML (4.7.6). Follow these steps:
1. Go to My Account → Downloads in your WPML account.
2. Download the latest version of WPML.
3. Install it on your site.
4. Activate the plugin.
If the issue persists:
- Temporarily deactivate all other plugins.
- Activate a default WordPress theme, such as Twenty Twenty-One.
- Try activating WPML again.
Important: Please remember to back up your database before making any changes.

If this solution does not resolve your issue or seems outdated, we recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If problems persist, please open a new support ticket.

This is the technical support forum for WPML - the multilingual WordPress plugin.

Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.

Tagged: Exception

This topic contains 1 reply, has 0 voices.

Last updated by Andrey 10 months ago.

Assisted by: Andrey.

Author	Posts
June 23, 2025 at 2:03 pm #17160946
sylvainD-4	Background of the issue: I am trying to activate the WPML Multilingual CMS plugin. I attempted to install it several times, but the process gets stuck and never completes, leaving the plugin unactivated. Symptoms: The plugin installation process is stuck and does not complete, preventing activation. This is what I get when I force the activation from the BlueHost panels : Fatal error: Cannot redeclare initialize_wpml_cache_factory() (previously declared in /home1/ntewpwmy/public_html/wp-content/plugins/sitepress-multilingual-cms/tm.php:17) in /home1/ntewpwmy/public_html/wp-content/plugins/wpml-translation-management-transfer/plugin.php on line 30 Questions: What are my options to resolve the installation issue?
June 23, 2025 at 2:19 pm #17161103
Andrey WPML Supporter since 06/2013 Languages: English (English ) Russian (Русский ) Timezone: Europe/Kyiv (GMT+03:00)	Thank you for contacting WPML support. Please make sure you are using the latest version of WPML (4.7.6): 1. Go to My Account → Downloads in your WPML account. 2. Download the latest version of WPML. 3. Install it on your site. 4. Activate the plugin. If you still encounter the same issue, please try the following: • Temporarily deactivate all other plugins. • Activate a default WordPress theme (like Twenty Twenty-One). • Then, try activating WPML again. Important: Please remember to back up your database before making any changes.