“DELAY IN TIME, SECURITY IN LINE.”
What does this outage mean for Sui’s network reliability? Sui Network, a high-performance Layer-1 blockchain, has successfully restored full mainnet operations after a network outage that suspended transactions and block production for approximately six hours on January 14, 2026.
The outage lasted roughly five hours and fifty-two minutes, starting at around 2:52 pm UTC and ending at 8:44 pm UTC.
The Sui Foundation stated that it is putting better monitoring and automation in place to identify and stop similar consensus problems in the future, and it will shortly provide an entire incident report.
A validator consensus processing fault that led to validators diverging in internal checkpoint computations was identified as the cause of the outage.
Transaction submissions timed out and all new block creation was briefly halted as a result of the network’s inability to agree on new checkpoints.
Over $1 billion in value housed in wallets, apps, and decentralised services was essentially frozen during the incident when on-chain activity was halted.
The Sui Foundation affirmed that user assets remained safe throughout the stall by confirming that no money was lost, no forks took place, and no certified transactions were overturned despite the disruption.
In order to restore network synchronisation, validators moved swiftly to find and address the underlying issue, implementing an update and replaying consensus data. Normal block production and transaction processing resumed after the fix.
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