# Cosmos Hub 3 launch suspended. Relaunching Cosmos Hub 2

**URL:** <https://forum.cosmos.network/t/cosmos-hub-3-launch-suspended-relaunching-cosmos-hub-2/2743>\
**Category:** Miscellaneous\
**Created:** [September 24, 2019, 12:51pm UTC](https://forum.cosmos.network/t/cosmos-hub-3-launch-suspended-relaunching-cosmos-hub-2/2743 "2019-09-24T12:51:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gavin](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.cosmos.network/gavin/32/5602_2.png) [@Gavin](https://forum.cosmos.network/u/Gavin)\
**Post date:** [September 24, 2019, 12:51pm UTC](https://forum.cosmos.network/t/cosmos-hub-3-launch-suspended-relaunching-cosmos-hub-2/2743/1 "2019-09-24T12:51:42Z")

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# PSA: Cosmos Hub 3 launch suspended. Relaunching Cosmos Hub 2

![](https://www.redditstatic.com/desktop2x/img/renderTimingPixel.png)

Due to technical issues, the Cosmos Hub 3 launch has been suspended.

In a few minutes, we will be relaunching Cosmos Hub 2. Debrief will follow in the next 48 hours!

Spread the word: [https://twitter.com/Ether\_Gavin/status/1176477800783634434](https://twitter.com/Ether_Gavin/status/1176477800783634434)

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<div class="post-metadata">

**Author:** ![Gavin](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.cosmos.network/gavin/32/5602_2.png) [@Gavin](https://forum.cosmos.network/u/Gavin)\
**Post date:** [September 24, 2019, 9:16pm UTC](https://forum.cosmos.network/t/cosmos-hub-3-launch-suspended-relaunching-cosmos-hub-2/2743/2 "2019-09-24T21:16:29Z")

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In preparation for the upgrade, validators halted the Cosmos Hub 2 chain at 11:39 am UTC. Twenty-five minutes into the migration, validators uncovered an issue with the new genesis file that was caused by the migration command.

Validators deemed that the Cosmos Hub 3 would fail to launch with the instructions provided in the [upgrade proposal](https://hubble.figment.network/cosmos/chains/cosmoshub-2/governance/proposals/16). They then followed the proposal’s recovery plan to relaunch the Cosmos Hub 2 chain, which resumed at 1:54 pm UTC. The Cosmos Hub was down for a total of 2 hours and 15 minutes.

We are in the process of writing a detailed post-mortem to be published by end of week, and will outline the next steps for the Cosmos Hub 3 upgrade.

Twitter version here: [https://twitter.com/Ether\_Gavin/status/1176620977163292672](https://twitter.com/Ether_Gavin/status/1176620977163292672)