a website cannot show notifications even though alerts are expected
This symptom concerns the system path. Start with a neutral DeviceOK test where available so the next step is based on evidence rather than a generic reset sequence.
Do not jump to the most invasive fix
Avoid destructive resets, unofficial driver packages, firmware flashing, or replacing hardware before the simpler detection, permission, connection and configuration checks are exhausted.
Retest the same condition
After every meaningful change, repeat the same test under the same conditions and compare the result.
Rule out the simple causes
- 1
Run DeviceOK Notification Permission Test.
- 2
If permission is denied, change the site's notification permission to Allow.
- 3
Check OS notification settings, Focus/Do Not Disturb, and browser notification settings.
Work through the problem in order
- 1
If DeviceOK reports permission granted, the original site's notification subscription/app settings become more likely.
- 2
If permission is blocked by browser policy, resetting site permission may be required.
- 3
For managed devices, organization policy can override user settings.
If the matching DeviceOK test succeeds, prioritize the affected app, browser policy, operating-system setting, or configuration before assuming complete hardware failure.
If the same capability also fails in DeviceOK and another trusted diagnostic path, broaden the investigation to connection, operating-system/device state, official driver or firmware support, and finally hardware.