# Particle core unable to claim

**URL:** <https://community.particle.io/t/particle-core-unable-to-claim/11816>\
**Category:** Troubleshooting\
**Created:** [May 15, 2015, 12:10pm UTC](https://community.particle.io/t/particle-core-unable-to-claim/11816 "2015-05-15T12:10:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![particleUser](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@particleUser](https://community.particle.io/u/particleUser)\
**Post date:** [May 15, 2015, 12:10pm UTC](https://community.particle.io/t/particle-core-unable-to-claim/11816/1 "2015-05-15T12:10:08Z")

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I have a particle core that I am trying to claim. I can retrieve the core id over usb with “spark setup” but after entering wifi info and getting a com response from the core, the core only blinks cyan fast when it should be breathing cyan. Claiming with the Android app and [build.particle.io](http://build.particle.io) will not succeed either.

```
Failed to claim core, server said ['device does not exist']
Please wait until your core is breathing cyan and then press ENTER

```

Could the spark/particle change have broken the claiming process? I was able to claim a different core before the spark/particle change.

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<div class="post-metadata">

**Author:** ![kennethlimcp](https://avatars.discourse-cdn.com/v4/letter/k/c0e974/32.png) [@kennethlimcp](https://community.particle.io/u/kennethlimcp)\
**Post date:** [May 15, 2015, 12:53pm UTC](https://community.particle.io/t/particle-core-unable-to-claim/11816/2 "2015-05-15T12:53:58Z")

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Is it a totally new spark core?

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<div class="post-metadata">

**Author:** ![particleUser](https://avatars.discourse-cdn.com/v4/letter/p/d9b06d/32.png) [@particleUser](https://community.particle.io/u/particleUser)\
**Post date:** [May 15, 2015, 1:18pm UTC](https://community.particle.io/t/particle-core-unable-to-claim/11816/3 "2015-05-15T13:18:13Z")

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Yes. Another new one I have is having the same issue.