Sui Network suffered two consecutive outages this week after a bug in its 1.72 upgrade disrupted block production. The blockchain, which processes transactions for decentralized apps, went offline twice in quick succession, leaving users unable to finalize transfers and sparking concern among token holders.
What went wrong with the 1.72 upgrade
The outages stemmed from software bugs introduced in the 1.72 version, according to the network's developers. Sui's validators paused block production after the first outage, then restarted — only for a second halt to occur hours later. The team has not yet released a full post-mortem, but early reports point to flaws in the upgrade's code that caused validators to lose consensus.
Impact on block production and users
Each outage lasted roughly 30 to 60 minutes, during which no new blocks were created. Transactions queued up but didn't confirm. Decentralized applications built on Sui — including lending protocols and NFT marketplaces — temporarily stalled. The network's native token, SUI, dropped around 8% in the hours following the second incident, reflecting market jitters about reliability.
Why two outages in a row
The first fix appeared to work, but a second, related bug triggered a fresh outage. That pattern — a patch that doesn't fully resolve the underlying issue — raised questions about testing procedures. Sui's developers have said they're working on a more comprehensive fix and have temporarily paused further validator upgrades until the code is stable.
The network has recovered and is processing blocks again. But users are watching closely. The next update — likely version 1.73 — will need to arrive soon and hold steady. If it doesn't, confidence in Sui's reliability may take a longer hit.
