Google Tag Manager Preview Mode not working? Here’s the fix

Is Google Tag Manager preview mode not working for you? Learn how to fix it. And if this video does not help, check the first link below and you will definitely find a solution.

If you are still stuck, post a comment with a detailed description of your setup:
* Link to your preview and debug mode
* Link to your website’s URL
* description of what exactly is not working, what symptoms do you see.

=== LINKS ===

✭ Blog post with more tips: how to fix GTM preview mode

✭ Chrome Extension: Tag Assistant Companion

✭ Chrome Extension: Tag Assistant (legacy)

📕 Free e-book: Google Tag Manager for Beginners

=== CONNECT WITH JULIUS & ANALYTICS MANIA ===

#googletagmanager #googleanalytics4

[JessieVoss]

This video is three years old, yet its still valuable! Thank you.

[vicentemanzoflores]

I cant believe how much I struggled with this and desabling my extensions was all I needed hahaha thank you very much

[growthgeyser]

Excellent. 'Google Tag Assistant (Legacy)' Chrome extension was the culprit for me. This was baffling me for many months. Thank you!

[RefocusCreative]

You're a lifesaver, dude! My hold up was the Malwarebytes Chrome extension. I disabled it and it worked immediately. Thank you!

[Mame-MorFall]

OMG man, you've just ended 90 minutes of pure pain. Thank you so much

[hugandgtfo]

Man, the "check your quotation marks" tip saved my day!

[andrewschaeffer]

Thanks for the video! My problem was solved by reinstalling the tag assistant companion plugin. Also, I needed to turn off my cookie consent policy temporarily for testing - otherwise the page it opens defaults to protected. I used Bricks Builder, FluentSnippets to put the GTM tag, and Termageddon (usercentrics) cookie policy.

[mekkawybusiness]

You Literally Saved My Day!!! The incognito method is the one that worked with me! Thank you so much!!!

[shaok]

Thank you so much, the reason was the ad block extension.. thank you so much

[LilithinMerria]

Thank you so much for this. Mine was an extension error, and it fixed now thank your tutorial/guide/fix. ^^

[ManiSaintVictor]

Thank you! I was able to find an error in the way I pasted in the tag script using your approach-after a whole morning of trying everything else.

[barssoref]

Very nice video. My problem was not connecting to my subdomain. Than I found out that from inspector-network tab my problem was ad-blockers blocking. When i disable the adblockers everything start to work.

[dadrummer]

I've triple checked the code was installed properly and it's still not showing up under developer tools. Any idea why that would be happening?

[pmm.pedromesquita]

YES! I've just tried in incognito mode and it works! Now let's the conflict-extension ahha

[GospelMusicians]

Yep that did it! I had some privacy extensions on my Browser! Thanks soo soo much!

[LidiaKhait]

thanks a lot!!! It's was a uBlock Origin extension... 🤦‍♀

[Leiva]

Por fin pude resolver mi problema, muchas gracias. En mi caso era la 5 solución, cada vez que habría el modo de vista previa lo hacia en una ventana emergente y no quería eso, 06:33 instalé la extensión de Tag Assistant y lo solucione. Un saludo desde ESPAÑA!

[saleemmurtaza]

Thank you bro. 6.08 disabling check box worked in my case.

[julietaalberti]

You literally saved my day, week, month

[futurumagency]

Thanks so much! It was uBlock origin that was causing problems for me! Thanks again