# Error fetching Device -\> can't delete Device in Cluster V2 **URL:** \ **Category:** v2 Backend\ **Created:** [September 22, 2021, 6:07am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717 "2021-09-22T06:07:59Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 22, 2021, 6:07am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/1 "2021-09-22T06:07:59Z")
Unfortunately, this device can no longer be deleted in Cluster V2, and thus also not the associated application. Is there a solution for this? The sensor does not come “online” in cluster V3. ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/6/d/6df43fdc2aa948b4281eb33d05070aa8c41138c0.png) ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/1/4/14c0f54720e98a3de9a05f499254ef3b9297d4fa.png) ---
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 23, 2021, 5:43am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/2 "2021-09-23T05:43:20Z")
It is not possible to bring the sensor up in Cluster V3. I believe it is blocked by Cluster V2 Fyi, I am collaborator, with all rights: - settings - delete - devices - collaborators ---
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 23, 2021, 5:44am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/3 "2021-09-23T05:44:53Z")
![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/a/4/a43e085c46a1e0e07c68ce417eb251db85c4a03a.png) ---
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 23, 2021, 7:16am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/4 "2021-09-23T07:16:52Z")
**SOLVED** Remove the battery for at least 24h or Remove the battery, short-circuit the battery terminal (100 Ohm) for at least 10 seconds. Measure with a voltmeter until less than 2V is present (capacitors discharged). Booting takes at least 40 seconds, a short blue flash is seen. Then after another 3s short flashing, the join request is thus successfully executed. ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/6/b/6bf7fb3fe166d97359c800f0213db10039b00fc8.jpeg) ---
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 23, 2021, 7:18am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/5 "2021-09-23T07:18:48Z")
![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/7/8/78aa3d9f6c7a8727ceff6b2c108879a4e5165b8f.png) ---
**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\ **Post date:** [September 23, 2021, 8:26am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/6 "2021-09-23T08:26:12Z")
Well done on solving the problem - it would be useful for the community if you told us which sensor it is so anyone else with a similar problem can use this as guidance. ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [September 23, 2021, 9:24am UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/7 "2021-09-23T09:24:56Z")
A Tracknet/TABS/Browan TBHH100 T&H? (OP Pic + internals pic) me thinks… Basically need to force a rejoin to take new V3 creds… ---
**Author:** ![optenda](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/optenda/32/35697_2.png) [@optenda](https://www.thethingsnetwork.org/forum/u/optenda)\ **Post date:** [September 23, 2021, 2:09pm UTC](https://www.thethingsnetwork.org/forum/t/error-fetching-device-cant-delete-device-in-cluster-v2/51717/8 "2021-09-23T14:09:55Z")
> [@Jeff-UK](#): > > TABS/Browan TBHH100 Correct, it is a TABS TBHH100 Temperatur&Humidity Sensor