The Sui blockchain suffered a fresh outage on Friday morning, less than a day after a nearly six-hour disruption, as the network once again stopped processing blocks for close to two hours.
According to the project’s public status page, block production had stalled entirely during the incident, freezing all on-chain activity. A post on X confirmed a “network stall” on mainnet and said the core engineering team was investigating, promising further updates and a full incident report.
Follow-up to Sui’s longest recorded downtime
Friday’s halt followed Thursday’s five-hour and 55-minute failure, described as the longest downtime in Sui’s operational history. That earlier outage was traced to a bug in version 1.72 of the network software, specifically within the gas charging logic.
An edge-case flaw in the consensus commit logic caused validator nodes to reach different conclusions about the state of the chain, effectively preventing the network from finalizing and producing new blocks.
Software patch and new features
To address the issue, developers released version 1.72.2, which introduced two key changes:
- address balances – a move away from a UTXO-style design toward a single canonical balance for each address, intended to simplify token management
- gasless stablecoin transfers – support for peer-to-peer stablecoin transfers without gas fees
The patch allowed block production to resume, but the network’s status page continued to flag “degraded performance” for mainnet validators for a period after services came back online, suggesting stability had not been fully restored.
By the time of Friday’s stall, at least two-thirds of validators had already upgraded to the fixed version, according to the public dashboard. It remains unclear whether the new interruption is directly linked to the prior bug or to a separate issue.
Impact on token price and trading levels
During Friday’s event, Sui’s token traded around $0.90, showing a modest intraday decline. The first, longer outage on Thursday had a more pronounced effect, with the token dropping about 6.6% to a low of $0.90 before recovering toward $0.93 after the network came back online.
Market participants are now watching the $1.00 level closely, as it appears to have shifted from a support area to a resistance zone following the recent selloff.
Repeated disruptions challenge reliability
The back-to-back outages bring Sui’s track record back under scrutiny. These failures are the third major service disruptions for the blockchain in less than two years, after similar stalls in January 2026 and November 2024.
In each case, block production stopped entirely, freezing all transactions and on-chain operations. For a decentralized ledger positioned as a high-performance network, extended periods of complete inactivity represent a fundamental challenge to its operational integrity.
Capital exposure remains significant
Despite recurring technical problems, the Sui ecosystem still holds substantial capital. Total value locked stands at roughly $542 million across 137 protocols, underscoring the scale of funds directly exposed to the platform’s stability and uptime.
Next steps from developers
Core developers have committed to publishing a detailed incident review in the coming days. The report is expected to outline the root causes of the latest stalls, assess any links between Thursday’s bug and Friday’s outage, and set out measures aimed at preventing similar network-wide halts in the future.
In the meantime, engineering and operations teams continue to monitor mainnet performance as the network works to restore confidence after two outages in less than 24 hours.
Worried about outages like Sui’s? Learn how crypto sharding tackles scalability and reliability challenges.
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