Sui Restores Mainnet After Outage, Says Network Operations Have Resumed

Layer-1 blockchain Sui said it has restored its mainnet following an outage and resumed normal operations.

In a post on X on May 29, the Sui network said the mainnet was back online and transactions were being processed normally.

The outage occurred during the deployment of a long-term fix applied the previous day, according to Sui. As validators restarted to install a new binary, a randomness initialization process that runs at the start of an epoch failed to complete.

Sui said that initialization process requires a higher quorum than the consensus mechanism. It added that, after the process failed, there was a potential bug in how the state was preserved during validator restarts.

That bug prevented the network from advancing to the next epoch, halting mainnet operations.

Sui validators later applied a patch to fix both the underlying bug and the affected epoch. Network activity has since resumed normally, and transactions are now being processed smoothly.

Sui said it plans to release a more detailed incident review at a later date.