TP-Link Tapo Smart Light Bulbs L530 loose authentication

Installation
1

This has happened a few times. A few minutes two of my L530 bulbs triggered a need to re-authenticate. The manufacturers app on my phone works fine.

Log entries

2024-04-12 14:33:12.807 ERROR (MainThread) [kasa.klaptransport] Query failed after successful authentication Host is 192.168.1.158, Sequence is -1548299964, Response status is 403, Request was {"method":"multipleRequest","params":{"requests":[{"method":"get_device_info","params":null},{"method":"get_device_usage","params":null},{"method":"get_device_time","params":null}]},"requestID":1228533421760974848,"request_time_milis":1712946792795,"terminal_uuid":"Whdjl1vl7m8U8EwT6wt+rA=="}
2024-04-12 14:33:12.807 ERROR (MainThread) [homeassistant.components.tplink.coordinator] Authentication failed while fetching 192.168.1.158 data: Got a security error from 192.168.1.158 after handshake completed
2024-04-12 14:39:13.521 ERROR (MainThread) [kasa.klaptransport] Query failed after successful authentication Host is 192.168.1.171, Sequence is 1427977927, Response status is 403, Request was {"method":"multipleRequest","params":{"requests":[{"method":"get_device_info","params":null},{"method":"get_device_usage","params":null},{"method":"get_device_time","params":null}]},"requestID":1228534934692564992,"request_time_milis":1712947153506,"terminal_uuid":"P6LMnfDthWKv7HilovAQuA=="}
2024-04-12 14:39:13.521 ERROR (MainThread) [homeassistant.components.tplink.coordinator] Authentication failed while fetching 192.168.1.171 data: Got a security error from 192.168.1.171 after handshake completed

Any idea of what is going on?

2

Still happening. Why doesn’t Home Assistant remember my credentials and reauthenicate?

3

Same issue that Wes_s has, My L530 devices and ONLY my L530 devices “expire authentication” after some time and DO NOT reconnect unless I re-set them back up with the needed credentials.

Kasa/Tapo app remains functioning fine.

Whats the fix?! this obviously is something to do with Home Assistant.
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4

I have opened a thread specific to Authentication expired issues. Please report in that thread as we need to collect input to see how isolated/widespread this issue is.

5

I replaced my router/ap with a Flint 2 running openwrt once I realized my linksys wrt 3200acm was failing. The problem with my L530’s have gone away.

1 Like
6

Interesting; I have actually ran into some troubles with my existing wifi too that these devices used but it also “self healed” for other devs so I didnt assume the issue to be connected. But you just gave me something to think on with this situation. Thank you!