Custom error page 404 not working

[Navorski]

Which Umbraco version are you using?

13.9.3

Bug summary

When i configure a custom error page (what worked in previous versions) with the current v13 version it is not working anymore.

in my appsettings i am using it this way
"Content": {
"Error404Collection": [
{
"Culture": "default",
"ContentKey": "98085744-be6e-49c7-852f-2e812a1b06db"
}
],
"AllowEditInvariantFromNonDefault": true,
"ContentVersionCleanupPolicy": {
"EnableCleanup": true
}
},

But it seems to be ignored. i keep getting the default umbraco 404 page.

Specifics

I got out a project that was on umbraco 13.3.0 where it was still working fine, i updated the project to the latest umbraco 13.9.3, and the custom error page was gone, i got the umbraco default 404 page again.

I have a home page in 3 cultures (nl, en and fr)
i tried with a custom error page that didn't have a culture, i tried with a culture, i tried the error page at the root, i tried the error page as a subpage of my home document
The home document has 3 domain names
/en -> English
/nl -> Dutch
/fr -> French

Steps to reproduce

Just try to configure a custom error page.

Expected result / actual result

No response

[github-actions]

Hi there @Navorski!

Firstly, a big thank you for raising this issue. Every piece of feedback we receive helps us to make Umbraco better.

We really appreciate your patience while we wait for our team to have a look at this but we wanted to let you know that we see this and share with you the plan for what comes next.

• We'll assess whether this issue relates to something that has already been fixed in a later version of the release that it has been raised for.
• If it's a bug, is it related to a release that we are actively supporting or is it related to a release that's in the end-of-life or security-only phase?
• We'll replicate the issue to ensure that the problem is as described.
• We'll decide whether the behavior is an issue or if the behavior is intended.

We wish we could work with everyone directly and assess your issue immediately but we're in the fortunate position of having lots of contributions to work with and only a few humans who are able to do it. We are making progress though and in the meantime, we will keep you in the loop and let you know when we have any questions.

Thanks, from your friendly Umbraco GitHub bot 🤖 🙂

[AndyButland]

I can't replicate this I'm afraid, at least on my installation. I've configured:

  "Umbraco": {
    "CMS": {
      "Content": {
        "Error404Collection": [
          {
            "Culture": "default",
            "ContentKey": "d59bcc2b-230b-49da-afae-847155928706"
          }
        ],

And that renders the expected page if I navigate to a URL that doesn't resolve to a page.

To help resolve, could I ask you to please try on a clean 13 site? And then if you don't see the problem, try to introduce the setup you have with root nodes and domains. If you can then replicate the problem please let us know clearly what content setup you have to allow us to replicate and investigate. Thanks.