Sui faced a sharp technical disruption on May 28, 2026, when the network stopped producing blocks for nearly six hours. The incident came shortly after a protocol upgrade, with reports pointing to a bug in the Sui 1.72 release that triggered a validator consensus failure. During the outage, transaction processing across the blockchain came to a complete halt, affecting decentralised applications and user activity throughout the ecosystem. The disruption lasted approximately 5 hours and 55 minutes before validators coordinated a recovery and restored normal block production.
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