Direct answer
A correct-looking password can fail because the device selects a similarly named network, uses stale credentials, cannot support the security mode or receives a smart-setup prompt.
What this covers
- The observed symptom matches this record
- Customer-accessible settings, connections and external components
- Diagnosis before reset, deletion or component replacement
What it does not cover
- ×A model-specific error code with a different documented meaning
- ×Internal electrical, battery-cell, gas, refrigeration or sealed-component repair
- ×A guarantee that every model exposes the same control label
Capture the exact symptom
ReversibleVerify the exact SSID, capitalization and router security mode from an already connected device.
Run the smallest isolation test
ReversibleForget the network, type the password manually and test WPA2/WPA3 transition mode for older hardware.
Correct only the proven cause
ReversibleRename confusing duplicate/extended SSIDs or update the client; change the network password only if every device is affected.
Verify before changing anything else
ReversibleReconnect after restart and confirm the saved network rejoins automatically.
Evidence ledger
Sources behind this answer
Visible sources support the visible claims. Home Product Support records the publisher, the fact used and the review date; community reports can suggest an issue but do not become a published fact on their own.
Exact questions
Common follow-ups
What should I check before resetting anything?+
Verify the exact SSID, capitalization and router security mode from an already connected device.
What is the safest isolation test?+
Forget the network, type the password manually and test WPA2/WPA3 transition mode for older hardware.
When should I stop troubleshooting?+
Never share the password in support forms; avoid disabling authentication.
Answer for the exact device and software version shown above.