macOS keychain keeps asking for old Wi-Fi password

Scenario

After a wireless password change, users continue getting prompts from the keychain for the retired secret.

Recommended Resolution Path

1. Delete the stale network entry and related keychain items rather than repeatedly typing the new password.
2. Confirm whether configuration profiles are re-pushing the old secret from management.
3. Check if a hidden SSID or duplicate SSID profile is confusing macOS.
4. Once fixed, verify auto-join behavior after reboot so the issue is truly cleared.

Technician Notes

Document what changed, what confirmed the fix, and whether the issue points to a broader standards gap worth addressing for the client.