# Breathing cyan + Failed to claim device, server said: Device is not connected

**URL:** <https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984>\
**Category:** Troubleshooting\
**Created:** [August 9, 2016, 5:21pm UTC](https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984 "2016-08-09T17:21:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ryotsuke](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/ryotsuke/32/1902_2.png) [@ryotsuke](https://community.particle.io/u/ryotsuke)\
**Post date:** [August 9, 2016, 5:21pm UTC](https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984/1 "2016-08-09T17:21:14Z")

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Another Core device with trouble:

1. Wifi is setup. Core connects and is breathing cyan. Few other Core devices work in same network fine.
2. I’ve updated with --firmware tinker, --usb cc3000, particle update
3. I’ve did both particle keys doctor and particle server

Core is not seen in WebIDE and produces `Failed to claim device, server said: Device is not connected` when trying to add from console

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**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [August 9, 2016, 11:02pm UTC](https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984/2 "2016-08-09T23:02:15Z")

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Can you try retrieving the device ID again and try claiming?

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**Author:** ![ryotsuke](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/ryotsuke/32/1902_2.png) [@ryotsuke](https://community.particle.io/u/ryotsuke)\
**Post date:** [August 10, 2016, 6:13pm UTC](https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984/3 "2016-08-10T18:13:44Z")

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Device id can change? O.o Anyway that helped

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**Author:** ![Moors7](https://sea2.discourse-cdn.com/flex026/user_avatar/community.particle.io/moors7/32/588_2.png) [@Moors7](https://community.particle.io/u/Moors7)\
**Post date:** [August 10, 2016, 6:31pm UTC](https://community.particle.io/t/breathing-cyan-failed-to-claim-device-server-said-device-is-not-connected/24984/4 "2016-08-10T18:31:14Z")

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Nope, they can’t change. You probably used an incorrect one for that device the first time around 😉