Sui Network Goes Down for Hours, Just Months After the Last Downtime

In brief

• Sui's layer-1 blockchain is currently suffering another major network outage.
• The network's engineers have identified the issue and are rolling out a fix.
• Sui last suffered a "network stall" in January, going down for about six hours.

Built to compete with other speedy layer-1 blockchains, the Sui network has once more suffered from the same ills that rival Solana once faced: downtime.

The “network stall,” first identified and investigated on Thursday morning, has led to more than five hours of a major outage for the network as the Sui team works on a solution.

“Sui Mainnet is currently experiencing a network stall,” the blockchain posted on X around 10:30 a.m. ET. “Be aware that transactions may be paused at this time. Updates will be shared as soon as they are available.”

An update to the Sui network status page at 3:40 p.m. ET notes that a "fix is rolling out to validators."

did you guys try this?

this always works, btw. pic.twitter.com/3876dctFEh

— Observe (@obsrvgmi) May 28, 2026

The network’s latest “stall” comes just five months after a similar event plagued the layer-1’s mainnet in January for more than six hours of downtime. Prior to that, the network dealt with a significant validator issue in 2024 that didn’t allow transactions to process.

While the network’s engineers identified the issue shortly after it began investigating it, a fix has not yet been implemented as of this writing, according to the blockchain’s status page.

Amid the downtime, the network’s native token—SUI—may have been somewhat impacted by the event, falling 5.4% in the last 24 hours to trade at $0.92 and outpacing losses from Bitcoin, Ethereum, and other top coins.

Earlier this year, the first SUI ETFs hit the market, with products from Canary and Grayscale both offering exposure to the SUI token and staking reward access to traditional investors via equities markets.

The network’s native token made a new all-time high of $5.35 in January 2025, but has since fallen more than 82% from that point.

Launched in 2023, the network was developed by Mysten Labs, a spinoff of Meta’s Diem project. The network previously raised $300 million in a Series B round valuing it at $2 billion in 2022.

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