WPML

Firefox Browser – wp-wpml_current_language cookie will be soon rejected because it has the SameSite attribute set to None

Published 2021-11-29 · Updated 2021-12-03
Status
Open

Overview of the issue

If you select the option to Store a language cookie to support language filtering for AJAX on the WPML → Languages page, you will see the following error in your Firefox browser console:

Cookie “wp-wpml_current_language” will be soon rejected because it has the “SameSite” attribute set to “None” or an invalid value, without the “secure” attribute. To know more about the “SameSite” attribute, read https://developer.mozilla.org/docs/Web/HTTP/Headers/Set-Cookie/SameSite

According to their documentation, the warning is being displayed in FireFox because:

Cookies with SameSite=None must now also specify the Secure attribute (they require a secure context/HTTPS).

Workaround

  1. Open the Firefox browser and paste about:config in the address bar.
  2. Search for network.cookie.sameSite.laxByDefault.
  3. Double click on it and this value will be changed from false to true.
  4. Restart your Firefox browser.

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