Permalink setting - custom permalink causing 404 page error

[Carrie2]

We have added a custom permalink solution for our posts:

/articles/%postname%/

The existing posts now have the correct permalink structure but any URL that should pull back our 404 page now shows the most recent post instead.

Post that should pull back our 404 page:

https://www.worldfirst.com/uk/this-is-not-a-real-post/

Currently pulls back a recent post:

The changing face of e-commerce fulfilment

Not our 404 page (We are using custom 404 plugin)

There does not appear to be any documentation regarding this issue. Thoughts on how to resolved?

[tristup]

Hi Mike,

Thanks for reaching out.
It will be very difficult to say anything without investigating your website and the settings made in the Admin Dashboard. I would suggest you please provide your website URL and login credentials in a secure note to examine it further, including:

– WordPress Site URL & Login URL
– WordPress Admin username/password

To create a secure note, click the key icon underneath any of your posts.

Thanks