Sui network is down for the second day in a row
The Sui Layer-1 blockchain experienced another disruption on Friday, causing a “network blackout” before normal operations could resume.
“Network activity can be paused,” Sui's team said. The network outage lasted more than three hours and 30 minutes at the time of going to press, according to Sue's Network Uptime Dashboard.
Sui mainnet servers experienced disruptions on both Thursday and Friday. Source: Su
The last block before the disruption was produced on Friday at 11:51 UTC, according to the Swiss block explorer. Network activity on the Sui mainnet resumed around 3:30 UTC. The Sui team said in an update:
“Both today's and yesterday's outages introduced the 1.72 release interaction of address balancing and gas charging logic. Yesterday's implemented fix was an interim measure designed to restore network functionality.”
The temporary fix had a “low probability” of causing network outages, and the long-term software fix has now been implemented by most Sui verifiers.
Source: Follow up.
The incident followed several major disruptions and network outages, including Thursday's outage due to a “failure in gas charging logic” that led to nearly six hours of disruption. The accident occurred in It is the second major network disruption in 2026.
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The Sui network crashed in January due to a communication error
In January, the network went offline for more than six hours, halting production due to a consensus error. Validators submitted conflicting transactions to the protocol's checkpoint mechanism, and the network failed to reach the level necessary to communicate, according to a postmortem report.
Source: Follow up.
The January outage was not caused by network congestion, users' funds were “never at risk” and no “verified transactions” were reversed, the Sui team said at the time.
According to the postmortem report, “The issue was discovered and contained by Sui's checkpoint verification and quarantine mechanisms, which prevent any user-visible forks to stop progress.”
High-performance smart contract blockchain networks feature multiple layers, including data availability, transaction execution, and verifier consensus.
However, network disruption in crypto also affects centralized service providers, including exchanges where decentralized blockchain networks have fewer coordination challenges.
In May, crypto exchange Coinbase experienced a temporary service disruption due to an Amazon Web Services (AWS) outage, forcing markets to switch to “auction” mode before restoring full service.
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