The Sui Foundation, the nonprofit behind Sui Network, says it has made a “significant upgrade” to address the issues that caused three recent outages and left the blockchain offline for more than 15 hours over two days.
Sui experienced an outage that lasted nearly six hours on Thursday, and another two hours on Friday. The first one lasted eight hours and 25 minutes, the second one 43 minutes, According to to the Sui network accessibility panel. As of Monday, all systems are operational.
Sui Foundation he said in a blog post on Sunday, it said it had applied the update to fix the bugs that caused the crashes. It also highlighted several areas for improvement, such as better failure containment, end-of-life resiliency, and further investment in AI agents that helped with diagnosis, validator log review, and metrics collection.
“At this time, validators have fully addressed the known issues caused by both the original gas charging bug and the random state bug, and network activity has resumed,” the Sui Foundation said. He added that “no user funds were at risk during the outages, and the network did not reverse any committed transactions upon resumption.”
Source: Sui
In January, Sui suffered a similar outage that knocked the network offline for more than six hours. Another incident occurred in November 2024 when all validators were stuck in a failure loop for approximately 2.5 hours. Sui is the 13th largest blockchain by total value locked at $519 million and supports 137 protocols, According to to DefiLlam.
Errors introduced during software updates
The Sui Foundation said the last two blockchain outages were due to “crash bugs” introduced in software version 1.72. The errors affected gas charging, causing the network to draw down funds before transactions were canceled due to insufficient balances. This resulted in a negative balance which caused the system to crash
A ephemeral fix for the initial bug caused a third crash. The patch was intended to restore the network until a lasting solution was found, but there was a “known issue with a low probability of causing an outage.”
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The Sui token (SUI) has dropped since the crash. On the Thursday before the first failure, its rate was approximately 99 cents, According to to data from the CoinGecko cryptocurrency aggregator. It has since fallen about 11% and is worth about 88 cents as of Monday.
In early May, the token surged 50% to $1.41 following several positive developments, including a Nasdaq-listed company taking up a immense portion of the supply.
Sui launched its mainnet in May 2023, aiming to provide scalability and the ability to process transactions quickly enough for major financial institutions.
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