Why is my Google tag not firing?
The Google tag and Google Tag Manager help pages give 5 common reasons. The first to rule out: The page you are checking may not have the Google tag on it at all.
Is it broken, or just quiet?
A number can fall because fewer people came, or because something stopped counting them. Below are the causes the Google tag and Google Tag Manager help pages give, and how to check each one yourself.
What causes it?
The page you are checking may not have the Google tag on it at all.
In the Google tag and Google Tag Manager help:
The URL you entered might not have the Google tag on the page.
Troubleshoot with Tag Assistant, read 2026-11-12.An ad blocker in the browser can stop your tag from running.
In the Google tag and Google Tag Manager help:
Ad blockers installed in your web browser may prevent the Google tag from running.
Troubleshoot with Tag Assistant, read 2026-11-12.Your cookie banner or consent tool can block the tag.
In the Google tag and Google Tag Manager help:
Consent management tools may block Google tags.
Troubleshoot with Tag Assistant, read 2026-11-12.If the tag loads inside an embedded frame on the page, Tag Assistant may not find it.
In the Google tag and Google Tag Manager help:
The page loads the Google tag in an iframe.
Troubleshoot with Tag Assistant, read 2026-11-12.Changes you make in Tag Manager do not go live on your site until you publish them.
In the Google tag and Google Tag Manager help:
When you publish a container, Tag Manager will make your changes active for the environment specified.
Publishing, versions, and approvals, read 2026-11-12.
How do I check it myself?
Try another page on your site where the tag should be, to see if the problem is just one page.
In the Google tag and Google Tag Manager help:
Try a different URL on your website where you expect to have the Google tag installed.
Troubleshoot with Tag Assistant, read 2026-11-12.Turn off ad blockers for the pages you are testing.
In the Google tag and Google Tag Manager help:
Disable ad blockers for the pages you need to test.
Troubleshoot with Tag Assistant, read 2026-11-12.Open your browser's developer tools to see whether the Google tag fires.
In the Google tag and Google Tag Manager help:
You can use the browser's developer tools to see if the Google tag is firing.
Troubleshoot with Tag Assistant, read 2026-11-12.
How would I know the day it starts?
- Feder reads the tags published in your live Tag Manager container.
- If a measurement tag drops out of the live version, Feder tells you.
- Feder does not watch tags fire in a visitor's browser.
Some numbers are too quiet to judge daily, such as a form filled in a few times a week. Until there is enough of your own history to judge a change, Feder says it is still learning and scores nothing, rather than guessing.
See what Feder reads from Google Tag Manager, which feeds Roots. Feder only reads. It never changes anything in Google Tag Manager.
What else goes wrong with these numbers?
- Why did Google Analytics stop collecting data?Google Analytics
- Why aren't my key events showing in Google Analytics?Google Analytics
- Why does Google Analytics show (not set)?Google Analytics
- Why is yesterday's data missing in Google Analytics?Google Analytics
- Why doesn't my Accelo invoice total match what I expected?Accelo
See every question.
Where do these answers come from?
Every cause and check on this page comes from the Google tag and Google Tag Manager help pages, quoted above with the date we read them. Last reviewed 2026-11-12. We read them again by 2027-11-12. If one changes, this page changes or comes down.