Sui Network is facing a second consecutive day of mainnet disruption, with its official status page marking the issue as a Major Outage tied to Mainnet settlement. The latest stall remained ongoing for roughly two hours at press time, following a nearly six-hour halt the previous day that Sui attributed to a software bug introduced in its 1.72 release.
Sui Mainnet Stalls Again After Prior Outage
Sui’s official X account said the mainnet was experiencing a renewed network stall, warning users that normal activity may be interrupted. The notice came less than a day after the network resumed from a separate halt, making this the second mainnet outage in two consecutive days.
“Sui mainnet is currently experiencing a network stall. Network activity may be paused at this time.
The Sui Core team is actively investigating. Updates and incident review will be shared as soon as they are available.”
Sui Status listed the latest incident as a Major Outage, with the affected component identified as Mainnet settlement. A blockchain explorer showed that no new blocks had been produced for more than an hour during the disruption, indicating that the network was not progressing normally. At press time, the second outage was still ongoing and had lasted roughly two hours.
The disruption follows the first stall on May 28, 2026, when Sui also warned that transactions could be paused. That incident lasted nearly six hours, with reports placing downtime at about 5 hours and 55 minutes as block production and checkpoint progress were halted. During that period, DeFi applications, wallets, games, exchanges, and other services depending on Sui settlement were temporarily unable to process transactions normally.
Core Team Investigates Renewed Network Halt
Sui said the first outage was caused by a crash bug in the gas charging logic introduced by the 1.72 release. After activity resumed, the network said it would publish a fuller review of the incident in the coming days, but the detailed root cause analysis, validator-level impact, and prevention measures have not yet been made public.
“Activity on Sui mainnet has resumed after a halt due to a crash bug in the gas charging logic introduced by the 1.72 release. A full incident review will be shared in the coming days.”
The earlier May 28 notice from Sui also framed the event as an active network stall and warned users that transactions might not move through the chain as expected. That message was followed by the later confirmation that activity had resumed, before the network encountered the renewed halt the next day.
“Sui Mainnet is currently experiencing a network stall. The Sui Core team is actively working on a solution.
Be aware that transactions may be paused at this time. Updates will be shared as soon as they are available.”
The repeated stalls are notable because Sui is positioned as a high-performance Layer 1 network, and reliability is a central requirement for DeFi, payments, gaming, and institutional infrastructure. The latest incidents also follow earlier disruptions: in January 2026, Sui experienced a prolonged halt caused by validator consensus divergence that prevented new checkpoints from being certified, and in November 2024 the network went down for nearly two hours due to a bug in transaction scheduling logic.
The Sui Core team is still investigating the renewed mainnet halt, and the network has said further updates and an incident review will be shared when available. Until the full postmortem is released, key details remain outstanding, including the specific cause of the second outage, the scope of validator impact, and what changes will be implemented to reduce the risk of repeated stalls.
AI Transparency Note: This article was prepared with the assistance of an AI system based on the sources listed and was reviewed, edited, and approved by a human editor before publication. All quotes, data points, and factual claims are intended to be grounded in the cited source material; however, errors cannot be ruled out entirely.