Sui blockchain suffers another network outage as transactions grind to a halt

Sui blockchain suffers another network outage as transactions grind to a halt

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By Margaux Nijkerk|Edited by Nikhilesh De

May 28, 2026, 4:11 p.m. 1 min read

(Nadine Shaabana/Unsplash)
  • Sui Network suffered a mainnet outage that temporarily stalled transaction processing, with the project saying its core team is working on a fix.
  • The disruption adds to a string of technical issues for Sui, which has faced previous outages and performance incidents since late 2024.

Sui network, a layer 1 blockchain developed by Mysten Labs, is experiencing a network outage on Thursday after the project said its mainnet had “stalled,” temporarily halting transaction processing.

“Sui Mainnet is currently experiencing a network stall. The Sui Core team is actively working on a solution,” the project posted on X. “Be aware that transactions may be paused at this time. Updates will be shared as soon as they are available.”

The disruption appeared to pause activity across the network, though the team had not yet disclosed the cause of the issue at press time.

The incident marks another in a series of technical disruptions for Sui. The blockchain has previously faced periods of degraded performance and outages, including one earlier this year.

Sui, which launched in 2023, is among a group of newer layer 1 blockchains competing with Ethereum and Solana by offering high-speed transactions and low fees. The network’s native SUI token is down 8% in the last 24 hours, though broader crypto market conditions were mixed.

Blockchain outages remain a closely watched issue for traders and developers, particularly for networks that market themselves as high-performance infrastructure for decentralized finance and gaming applications.

The Sui team said it would provide additional updates as the investigation continues.

Read more: Crypto for Advisors: Breaking down the Sui blockchain

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