How to Fix Clock App Not Working (Alarms, Timer, Focus) on Windows
Windows Clock app not opening, alarms not firing, timer broken, or Focus Sessions not working? Fix the Clock app on Windows 10 and 11.
Symptoms
You might be experiencing this problem if you notice:
- •Clock app won't open or crashes on launch
- •Alarms not sounding even though they're set
- •Timer stops counting when app is minimized
- •Focus Sessions feature missing or not starting
- •World Clock showing wrong times for added cities
- •Stopwatch resets when switching to another app
Common Causes
- ⚠Clock app package corrupted after Windows Update
- ⚠Notification settings blocking alarm sounds
- ⚠Do Not Disturb / Focus Assist silencing alarms
- ⚠Background app permissions disabled for Clock
- ⚠System time or timezone incorrect affecting World Clock
- ⚠Clock app not updated to latest version with Focus Sessions
Solutions
Solution 1: Fix Alarm Notifications
- 1Open Settings > System > Notifications
- 2Ensure "Notifications" is toggled ON at the top
- 3Scroll down to "Alarms & Clock" or "Clock" and ensure it's ON
- 4Check Settings > System > Focus assist > ensure alarms are in the priority list
- 5Check volume isn't muted — alarms use system notification volume
Solution 2: Enable Background App Permissions
- 1Open Settings > Apps > Installed apps
- 2Find "Clock" and click Advanced options
- 3Under "Background app permissions" select "Always"
- 4This ensures timers and alarms work when the app is minimized
Solution 3: Reset Clock App
- 1Open Settings > Apps > Installed apps > Clock > Advanced options
- 2Click "Repair" first — if that doesn't fix it, click "Reset"
- 3If still broken: open Admin PowerShell and run:
- 4Get-AppxPackage *WindowsAlarms* | Remove-AppxPackage
- 5Then reinstall from Microsoft Store: search "Windows Clock"
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