What Happened With SUI Blockchain? Explaining Block Production Halt

Cover image via U.Today Disclaimer: The opinions expressed by our writers are their own and do not represent the views of U.Today. The financial and market information provided on U.Today is intended for informational purposes only. U.Today is not liable for any financial losses incurred while trading cryptocurrencies. Conduct your own research by contacting financial experts before making any investment decisions. We believe that all content is accurate as of the date of publication, but certain offers mentioned may no longer be available. Validators hault block creation Sui responds quickly Advertisement On May 28, the Sui blockchain encountered one of its biggest disruptions to date when block production abruptly stopped, preventing the network from processing transactions for almost seven hours . Validators hault block creation The problem first came to the public's attention when validators stopped creating new blocks, thereby freezing network activity. Later, Sui acknowledged that a network stall was occurring on its Mainnet and alerted users that transactions might be temporarily halted while developers looked into the issue. You Might Also Like Thu, 05/28/2026 - 19:27 Ripple CEO: 'Anti-Crypto Army' Has Been Defeated By Alex Dovbnya HOT Stories Ripple's Schwartz Mocks Audacious $286 Billion Bitcoin Lawsuit Near (NEAR) Approaches Golden Cross as Dogecoin (DOGE) Under Pressure; XRP Tests Critical Support: Crypto Market Review A crash bug in the blockchain's gas charging logic was the cause of the outage, according to the team's official post-mortem report. The software's version 1.72 contained the flaw, which caused a failure that stopped validators from producing blocks normally. Advertisement On May 28, the final block prior to the outage was recorded at around 21:48 UTC+8. Consequently, while engineers worked on a solution and organized validator upgrades, the network remained unavailable for approximately six hours and forty-four minutes. Validator participation was essential to Sui's recovery. Before block production could safely resume, the team created and disseminated a patched version of the software that required validators to update. Sui responds quickly On May 29, at 04:32 UTC+8, Sui declared that the fix had been adopted by over two-thirds of the network's stake, enabling consensus to resume and the blockchain to reopen. Since then, network activity has returned and blocks are now being generated as usual. Advertisement You Might Also Like Thu, 05/28/2026 - 17:16 BNB Joins Roster of Altcoins With Own ETFs By Alex Dovbnya According to the development team, network availability rather than asset security was the issue, and user funds were safe during the entire incident. Despite this, the outage spurred debate about blockchain decentralization and resilience throughout the cryptocurrency sector. Although brief outages are common in high-performance networks, detractors contend that extended pauses cast doubt on the operational dependability of applications that rely on constant uptime. For the time being, Sui developers are concentrating on regaining trust and making sure that such mistakes don't happen again. After one of the longest network outages in Sui's history, the team has committed to releasing a thorough incident review in the upcoming days that will include information on the crash's primary cause, the recovery procedure, and any further security measures that will be put in place. #Sui Network