# Session timeout: Device is not detected by GenieACS

**URL:** <https://forum.genieacs.com/t/session-timeout-device-is-not-detected-by-genieacs/1293>\
**Category:** Uncategorized\
**Created:** [December 14, 2020, 1:25pm UTC](https://forum.genieacs.com/t/session-timeout-device-is-not-detected-by-genieacs/1293 "2020-12-14T13:25:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ferdinando](https://avatars.discourse-cdn.com/v4/letter/f/dfb087/32.png) [@Ferdinando](https://forum.genieacs.com/u/Ferdinando)\
**Post date:** [December 14, 2020, 1:25pm UTC](https://forum.genieacs.com/t/session-timeout-device-is-not-detected-by-genieacs/1293/1 "2020-12-14T13:25:24Z")

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Hi,

some CPE devices are not being able to be detected by GenieACS. I verified this same situation in two different equipments. The “session timeout” messages appears in GenieACS logs:

2020-12-14T11:28:07.166Z [INFO] 10.80.44.1 4C6E6E-M1200S-M1944000094: Inform; cpeRequestId=“1” informEvent=“0 BOOTSTRAP” informRetryCount=0  
2020-12-14T11:28:38.175Z [ERROR] 10.80.44.1: Session timeout; sessionTimestamp=1607945287163 deviceId=“4C6E6E-M1200S-M1944000094”

It seems that Router is closing the connection before completing the entire process (see the trace below when ONU sends FIN, ACK message). I used another ACS to guarantee that problem is not on ONU and it worked as expected.  
Also, I didn’t notice any big gap time between the messages… just to also discard the problem already comment in the forum (about the keep-alive timeout which is 5 seconds).

 ![genieacs_detection](https://canada1.discourse-cdn.com/flex035/uploads/genieacs/original/1X/cc43cbd96ba79f51cb93f168037bb798500daaed.png)

Can anyone help? This situation is only happening with GenieACS, that’s why I’m suspicious that the problem is related to some particular configuration in the ACS.

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**Author:** ![akcoder](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/akcoder/32/11_2.png) [@akcoder](https://forum.genieacs.com/u/akcoder)\
**Post date:** [December 14, 2020, 6:50pm UTC](https://forum.genieacs.com/t/session-timeout-device-is-not-detected-by-genieacs/1293/2 "2020-12-14T18:50:19Z")

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It appears the CPE isn’t conforming to the spec, as is very common, in that its not closing the session properly.

@zaidka has just addressed this in the latest master branch (which will be v1.2.4).

[See this thread](https://forum.genieacs.com/t/factoryreset-loop/1288/2) for more information.