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?