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The “Publishing Failed” error you’re encountering in Google Tag Manager (GTM) often occurs due to a network or firewall issue blocking Google’s servers from accessing your URL. First, ensure that the server where your GTM is hosted has whitelisted all Google’s IP addresses. This will allow Google to access your server and publish your tags.
Also, ensure that the ‘http://’ protocol is included in your URL configuration in GTM. Failing to do this can sometimes produce the same error.
Your URL configuration should also reflect your actual domain. Using ‘example.com’ might not work. Ensure it’s your correct domain name and try publishing again.
If none of those works, the issue might be due to GTM’s server-side tagging. Architectures set up with AWS can sometimes add additional layers of complexity. Have a fresh look at the guide you’ve been following. Check each step meticulously, and especially if your setup is mimicking the expected tagging architecture that’s in the guide.
At the same time, be aware that Google or Meta Support may take some time before getting back to you. Keep trying different GTM Communities too, and someone who’s faced a similar problem might eventually provide a solution.
