I just found that since “Alarms” is an app, Notifications are also SILENCED in “Sleep Focus”. Pretty terrible design. Sleep Focus used to turn off automatically when the Scheduled alarm is turned OFF. Not when it goes off. Snoozing keeps you in Sleep Focus, which explains some peoples’ issues. I moved the “Alarms” app to “Allowed” and it actually makes sound now. This doesn't fix it when you’re not using a focus or schedule, but it says I have no Focus profiles. So if you use the “Schedule” option for wake up alarms in Health or Sleep Settings, then you automatically have a Sleep Focus, and you have to allow access to Alarms Notifications. For those who use regular alarms, and also DND, you’ll need to allow notifications for the Alarms app while in DND. If it works some days and not others, you probably have a Focus Profile and/or Sleep Schedule programmed, whether you know it or not. Worth checking it out. I updated to ios26 2 months ago, but it just became an issue for me 3 days ago.