Sui's mainnet experienced another widespread outage on Thursday, with on-chain transactions halted for over five hours. This comes just months after the network's last outage, once again drawing market attention to the stability of high-performance public blockchains.

The project team claims to have located the problem.

Sui's team stated on the X platform that the mainnet was experiencing a "network outage," warning users that transactions might be suspended. Subsequently, the official status page was updated to indicate that a fix had begun being pushed to validators.

As of the time of this report, although the problem has been identified by the engineering team, the fix has not yet been fully implemented and the network has not yet returned to normal operation.

The system was also shut down for about 6 hours in January of this year.

This is not the first time Sui has experienced a similar situation this year. The network experienced a "network outage" in January, which lasted for approximately 6 hours.

Sui launched in 2023 and is developed by Mysten Labs. The company originated from Meta's early Diem project team and completed a $300 million Series B funding round in 2022, at which time it was valued at $2 billion.

SUI prices are under pressure.

During the mainnet outage, the SUI token underperformed mainstream crypto assets. Data shows that SUI fell 5.4% in the past 24 hours to $0.92, a larger drop than major tokens such as Bitcoin and Ethereum.

SUI reached an all-time high of $5.35 in January 2025, but has since fallen more than 82% from its peak. Earlier this year, SUI ETFs launched by Canary and Grayscale entered the market, allowing traditional investors to gain exposure to the token and staking rewards through the stock market. This latest mainnet outage may further intensify scrutiny of the network's reliability.