I’m having an issue where WSUS won’t deliver any updates to a specific Windows 11 device.

Here’s the situation:

• The device was originally Windows 10 and was upgraded to Windows 11 using an ISO
• WSUS reports that “No updates are needed”, so the client shows as compliant.
• However, when I build a fresh Windows 11 device, WSUS correctly detects missing updates and installs them.
• I’ve already tried WSUS reset, client re-registration, and resetting the SoftwareDistribution folder, but nothing changes.
• The problematic device still refuses to detect any needed updates.

Has anyone run into this issue where ISO-upgraded Windows 11 clients don’t receive updates from WSUS, while clean installs work normally? Any ideas on what else I should try would be appreciated.