Sui, the 31st-largest cryptocurrency by market value, suffered two mainnet halts in two days this week due to a software bug. Validators have now deployed a long-term fix, and transactions are flowing again, according to the Sui team. The back-to-back outages rattled confidence in the Layer 1 network’s reliability.
Two outages, 48 hours
The Sui mainnet first went down on Wednesday, then again on Thursday. Each halt knocked the blockchain offline entirely. The team didn’t disclose the exact duration of each outage, but the consecutive nature of the problem made it clear this wasn’t a one-off glitch.
What went wrong
The Sui team attributed both halts to a software bug. They didn’t provide technical specifics — whether it was in the consensus layer, transaction processing, or something else. But the fact that the same bug resurfaced within a day suggests the initial fix was incomplete or failed to address the root cause.
The patch that stuck
After the second outage, validators applied what the team called a long-term fix. The network resumed processing transactions, and the Sui team confirmed that transactions are “flowing” again. That’s the language they used — no drama, just a statement that the chain is operational.
What’s next
For now, Sui is running again. The team hasn’t announced a post-mortem or a timeline for one. Users who saw their transactions stuck during the halts will have to wait and see if any data needs reconciliation. But the immediate crisis — two days of downtime — appears to be over.
