Sui Network Experiences Major Outage Amid Ongoing Stability Challenges

In Brief

• Sui’s layer-1 blockchain is currently experiencing a significant network outage.
• Engineers have identified the issue and are deploying a fix.
• The network previously suffered a “network stall” in January, lasting over six hours.

Built to compete with other high-performance layer-1 blockchains, the Sui network has once again encountered prolonged downtime—a problem that has also plagued its rival, Solana, in the past.

The “network stall,” first detected Thursday morning, caused more than five hours of disruption as the Sui team worked to resolve the issue. Around 10:30 a.m. ET, the blockchain posted on X: “Sui Mainnet is currently experiencing a network stall. Be aware that transactions may be paused at this time. Updates will be shared as soon as they are available.”

By 3:40 p.m. ET, the network’s status page indicated that a fix was being rolled out to validators. This latest outage marks the second major disruption in five months, following a similar six-hour stall in January. Prior to that, the network faced a critical validator issue in 2024 that halted transaction processing.

As of this writing, while engineers swiftly identified the root cause, a resolution had not yet been implemented, according to the status page.

The outage coincided with a dip in the network’s native token, SUI, which fell 5.4% over 24 hours to $0.92, underperforming losses from Bitcoin and Ethereum. Earlier this year, SUI ETFs launched by Canary and Grayscale provided traditional investors access to the token via equities markets.

The token reached an all-time high of $5.35 in January 2025 but has since dropped over 82% from that peak. Launched in 2023 by Mysten Labs—a spinoff of Meta’s Diem project—the network raised $300 million in a 2022 Series B round at a $2 billion valuation.

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