# Failed to execute 'postMessage' on 'DOMWindow'

**URL:** <https://meta.discourse.org/t/failed-to-execute-postmessage-on-domwindow/296690>\
**Category:** Support\
**Tags:** embedding\
**Created:** [February 26, 2024, 12:07am UTC](https://meta.discourse.org/t/failed-to-execute-postmessage-on-domwindow/296690 "2024-02-26T00:07:41Z")\
**Posts on this page:** 1\
**Showing post:** 7

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**Author:** ![simon](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/simon/32/339122_2.png) [@simon](https://meta.discourse.org/u/simon)\
**Post date:** [February 27, 2024, 7:46am UTC](https://meta.discourse.org/t/failed-to-execute-postmessage-on-domwindow/296690/7 "2024-02-27T07:46:33Z")

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> [@Joseph3](#):
>
> Any ideas on this

Send me a PM with a link to a blog post that you have the embed code on and I’ll have a look.

To narrow down the cause of the issue, it would be great if you could try adding the embed code that’s found on your Discourse embedding page without any modifications, other than replacing `EMBED_URL` with the URL of the blog page.

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