Mainnet settlement
Affected: Sui Mainnet - ValidatorsSui Mainnet - Public RPC Nodes
Sui Outage History
Sui is up right nowSui had 7 outages in the last 2 years totaling 89h 21m of downtime — averaging 0.3 incidents per month.
There were 7 Sui outages since July 5, 2024 totaling 89h 21m of downtime. Each is summarised below — incident details, duration, and resolution information.
Consensus outage
Affected: Sui Mainnet - ValidatorsSui Mainnet - Public RPC Nodes
Timeline · 6 updates
- investigating Jan 14, 2026, 02:52 PM UTC
investigating consensus issues across all validators
- investigating Jan 14, 2026, 02:52 PM UTC
We are continuing to investigate this issue.
- identified Jan 14, 2026, 03:18 PM UTC
The issue has been identified and a fix is being implemented.
- identified Jan 14, 2026, 07:37 PM UTC
Fix is ready and will be rolled out soon
- monitoring Jan 14, 2026, 08:44 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Jan 14, 2026, 09:22 PM UTC
The validators have rolled out the fix and the system is fully functional.
Sui Mainnet Network
Affected: Sui Mainnet - ValidatorsSui Mainnet - Public RPC Nodes
Timeline · 2 updates
- investigating Dec 14, 2025, 07:52 PM UTC
We are currently investigating degraded consensus, much higher latencies.
- resolved Dec 14, 2025, 11:03 PM UTC
This incident has been resolved.
Testnet validators lost quorum for checkpoint generation
Affected: Sui Testnet - Validators
Timeline · 2 updates
- investigating Jun 28, 2025, 11:12 PM UTC
We understand the root cause and the team is figuring out options for troubleshooting.
- resolved Jun 29, 2025, 11:20 PM UTC
This incident has been resolved.
Validators are down
Affected: Sui Mainnet - Validators
Timeline · 4 updates
- investigating Nov 21, 2024, 10:39 AM UTC
We are currently investigating this issue.
- investigating Nov 21, 2024, 10:40 AM UTC
We are continuing to investigate this issue.
- resolved Nov 21, 2024, 11:47 AM UTC
v1.37.4 patch has been rolled out on Mysten Validators and announced publicly for immediate rollout.
- postmortem Nov 21, 2024, 08:58 PM UTC
Please see [https://blog.sui.io/sui-mainnet-outage-resolution/](https://blog.sui.io/sui-mainnet-outage-resolution/) for detailed explanation of what happened.
Sui testnet validators don't accept new user transactions
Affected: Sui Testnet - Validators
Timeline · 2 updates
- identified Nov 12, 2024, 09:17 PM UTC
There is an issue with the change in the cert processing on Sui testnet, enough validators aren't able to accept certs and as such it's impossible to submit user transactions on testnet. Walrus testnet writes are affected as a result of that as well.
- resolved Nov 12, 2024, 10:52 PM UTC
This incident has been resolved.
Public RPC nodes crashing when trying to submit a transaction
Affected: Sui Mainnet - Public RPC Nodes
Timeline · 3 updates
- identified Jul 05, 2024, 06:18 PM UTC
The team has identified the issue and is building a fix right now.
- identified Jul 05, 2024, 07:46 PM UTC
The fix is out on https://github.com/MystenLabs/sui/releases/tag/mainnet-v1.27.4, the team is building the new images
- resolved Jul 05, 2024, 08:00 PM UTC
The nodes are recovering after deploying 1.27.4