My last W11 update was in Oct-24. The trouble shooter wrongly says 'fixed'
I navigated to: Settings > System > Troubleshoot > Other troubleshooters
After the troubleshooter said "fixed" I ran the Windows Update tool. I then checked for Windows update history and got the confusing message "You're up to date/Your device is missing important updates. Make sure to keep your device on and plugged in so updates can complete" which I always do anyway. I've run the process several times and always get the same result.