If you are using Intune for Feature Updates, our Autopatch documentation will guide you through creating Feature Update phased rollouts, Windows feature updates overview | Microsoft Learn  In terms of what's not working, it will be difficult for us to diagnose through this forum. But some things you can check - if the devices are in scope of the policy but do not report any status back, it's possible the devices current have a safeguard hold in place that prevents the feature update from being offered to them. If the feature update should encounter an error while processing, that should show up in reporting in Intune in the Feature Update Policies with Alerts. 

Hi there, so if you are trying to update to the latest feature update version via Intune there are a few reasons this may not be working: 

1. Policy conflict (make sure you have no leftover policies from Configuration Manager, Group Policy, etc. that could be causing conflict)
2. Safeguard holds Safeguard holds for Windows | Microsoft Learn which should go away automatically 
3. If moving from Windows 10 to Windows11, in addition to the deferrals, you will need to select target product version = 11, you can do this via the "Windows 11" toggle on the rings page or via Settings Catalog. 

Hope this helps, let me know if you have any additional questions! :)