# Epoch Related Articles

Sui Reveals What Caused Three Mainnet Halts After Major Network Upgrade

The Sui mainnet experienced three outages on May 28 and 29 following its 1.72 network upgrade. The first two halts, on Thursday and Friday morning, were caused by a bug in the new hybrid gas charging logic for address balances. A transaction cancellation due to insufficient funds could later trigger an underflow during the gas settlement process. A temporary patch was applied, but a masked error caused a repeat halt Friday morning. The third outage Friday afternoon was a separate issue triggered by a scheduled epoch change. A bug prevented validators from properly persisting the failed status of a randomness generation protocol, stalling the transition. All issues have been resolved with no risk to user funds, and network activity has resumed. The Sui Foundation cited lessons around improving epoch resilience and the critical nature of gas charging logic.

bitcoinist06/02 05:02