An Umbraco cloud site I work with was auto upgraded to 13.3.1, however after doing so we aren't able to load any pages aside from home - the rest return a 404. We've confirmed the upgrade is likely at fault by reverting to the previous version, 13.3.0, and the pages start working again. Anybody else seen this?

I had this issue on a site using Articulate... Updating Articulate to 5.1.0 fixed it... I would check to see if any of your sites are using custom content finders or packages that use them

Thanks Aaron, we experienced the same problem on this site with Articulate earlier in the build - the fix for us involved downgrading from 5.1.1 to 5.1.0 which we still have. The only thing which changes between the pages working and not working is the Umbraco CMS version.

It might be worth checking your Articulate versions, I cannot see a 5.1.1 on nuget. We had to upgrade from 5.0.0 to 5.1.0 to fix this issue.

This is likely related to a known bug that HQ are working on a release to fix ASAP. More info here: https://github.com/umbraco/Umbraco-CMS/issues/16341 and here: https://github.com/umbraco/Umbraco-CMS/pull/16218

Thanks @Jason - @AaronSadlerUK I got the version numbers wrong, this is the issue I was thinking of https://github.com/Shazwazza/Articulate/issues/432

Ok, try 5.1.0

If the fix for the Umbraco patch doesn't do anything, that'll be our next port of call :)