Sui blockchain has resumed normal operations after a network outage that halted transactions for almost six hours, temporarily freezing over $1 billion in on-chain value.
The Sui Foundation announced on Wednesday that the network is now “fully operational,” confirming that transaction flow has returned to normal. Users experiencing lingering issues were advised to refresh their apps or browser windows.
The outage was first acknowledged at 3:24 pm UTC, when the foundation informed its 1.1 million followers on X that Sui core developers were actively investigating the issue. According to the foundation, the problem was initially detected at 2:52 pm UTC and fully resolved by 8:44 pm UTC, resulting in approximately 5 hours and 52 minutes of downtime.
The Sui network is now back and fully operational. Transactions are flowing normally. If you are still seeing issues, please refresh your app or browser window. Thanks for your patience. We will share a full incident review in the coming days.
Please check…
— Sui (@SuiNetwork) January 14, 2026
While the foundation confirmed the disruption was caused by a “consensus outage,” it has yet to provide details on the root cause.
Second major network failure since launch
Wednesday’s disruption marks Sui’s second major outage since the blockchain launched in May 2023. The network previously experienced a significant failure in November 2024, raising fresh concerns around reliability despite Sui’s reputation as a high-speed blockchain.
Other layer-1 networks, including Solana, have faced similar challenges in the past. However, Solana has avoided major outages for over 18 months after implementing emergency coordination tools and rolling out critical validator updates.
Also Read: Taiko Halts Bridge Operations After $1.7 Million Exploit
SUI token sees brief price reaction
Despite the extended outage, Sui’s native token showed limited market reaction. The SUI token briefly jumped about 4% following confirmation that the network was back online before retracing to trade near $1.84, according to CoinGecko data.
Meanwhile, the Sui Foundation rolled out a blockchain-based framework to create a verifiable AI economy, combining on-chain data, accountable AI systems, and autonomous commerce.
Sui faced more outages in May 2026
On May 28 and 29, the network experienced three separate outages. The first two were linked to bugs involving gas-charging logic introduced with Sui’s 1.72 release, which added address-balance functionality. A subsequent interim fix contributed to another outage, while a separate bug involving validator randomness state was exposed during the recovery process.
The outages lasted approximately 6 hours 30 minutes, 3 hours 30 minutes, and 5 hours 50 minutes, respectively, according to Sui’s incident report, leaving the network unavailable for more than 15 hours across the two days. No user funds were at risk, and no committed transactions were reverted.
The Sui Foundation subsequently deployed a major upgrade to address the underlying problems. The fixes included changes to gas-charging logic, persistence of distributed key-generation status across validator restarts and a mechanism for closing a stalled epoch in a coordinated manner.
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