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

Problem: Can't install WPML updates after host change ("undefined" is the error I see when I try to update).

Solution: Client confirmed that re-registering the website solved the issue.

What you would need to do is go to your WordPress backend > Plugins > Add new > Commercial > Unregister WPML and register it again with a newly generated key (you can delete the existing one and create a new one) from your account (

Relevant Documentation:

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.

This topic contains 2 replies, has 2 voices.

Last updated by ninaB-6 10 months, 4 weeks ago.

Assigned support staff: Mihai Apetrei.

Author Posts
June 28, 2019 at 5:09 pm #4109563


I changed providers and can now no longer update WPML: error message that comes up is "undefined". Do I need to reactivate the license?

Link to a page where the issue can be seen:

I expected to see:

Instead, I got:

June 28, 2019 at 5:58 pm #4109801

Mihai Apetrei

Languages: English (English )

Timezone: Europe/Bucharest (GMT+03:00)

Hi and thank you for contacting WPML Support!

I will be happy to help you with this.

Can you please try the solutions from the tickets below and let me know if any of them solves the issue:


I will be waiting for your response.

Just a note that I won't be working on the weekend so I will be able to get back to you at the beginning of next week.

Kind regards,
Mihai Apetrei

July 3, 2019 at 10:37 pm #4139191


My issue is resolved now. Thank you! I had to reregister the site.