a web app cannot save local settings, offline data, or cached state
This symptom concerns the storage 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 Browser Storage Quota Test.
- 2
Check whether localStorage is writable and whether the browser reports available quota.
- 3
Retry outside private/incognito mode if the affected app relies on persistent local data.
Work through the problem in order
- 1
Clear only the affected site's data if corruption is suspected; avoid wiping all browser data as a first step.
- 2
If storage is nearly full, free device/browser storage and retry.
- 3
Managed privacy settings or tracking protection can intentionally restrict storage.
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.