# Sui Network Recovers After Six-Hour Outage — Second Major Disruption This Year
The Sui blockchain resumed normal operations on May 28 after a network outage that lasted approximately six hours, marking the second major disruption for the Layer-1 network in 2026.
The mainnet stalled at 14:15 UTC on May 28 and was fully restored by 20:32 UTC, according to the Sui Network team. The outage temporarily halted transaction processing and affected protocols built on Sui, including the Cetus decentralized exchange, NAVI protocol, Panzerdogs gaming platform, and USDC stablecoin transactions.
## Root Cause: Software Bug in Version 1.72
The disruption was caused by a crash bug in the gas charging logic of the version 1.72 software release. Gas charging is the mechanism that computes and deducts transaction fees on blockchain networks — a critical function that, when broken, can bring the entire network to a halt.
“The issue halted mainnet activity and temporarily disrupted transaction processing before developers deployed a fix,” the Sui team stated. No user funds were lost during the outage, and network activity has fully resumed.
## SUI Token Drops 8% on News
The native SUI token dropped approximately 8% following the outage announcement, reflecting market concern about the network’s reliability. SUI has been under pressure alongside the broader altcoin market, with Bitcoin’s decline toward $73,000 adding to selling pressure across the crypto ecosystem.
The price drop highlights how network reliability issues can directly impact token valuations, particularly for Layer-1 blockchains competing for developer mindshare and liquidity.
## Second Outage Raises Questions
This is the second network outage Sui has experienced this year. A January incident also disrupted network operations, raising questions about the blockchain’s stability as it competes with Solana, Aptos, and other high-throughput Layer-1 networks.
The recurring outages come at a sensitive time for Sui. The network has been gaining traction with developers through its Move programming language and parallel execution architecture, but reliability concerns could slow adoption.
The Sui team has promised a detailed post-mortem in the coming days, which will likely outline the specific bug, how it was introduced, and what safeguards are being put in place to prevent future incidents.
## Impact on Sui Ecosystem
The outage affected multiple protocols in the Sui ecosystem:
– **Cetus DEX** — Trading halted during the outage
– **NAVI Protocol** — Lending and borrowing paused
– **USDC on Sui** — Stablecoin transactions delayed
– **Panzerdogs** — Gaming platform inaccessible
The fact that major DeFi and gaming protocols were impacted demonstrates Sui’s growing real-world usage, even as the outage exposes the risks of depending on a single blockchain’s uptime.
## Broader Context: Layer-1 Reliability
Sui isn’t alone in facing network challenges. Solana has experienced multiple outages throughout its history. Even Ethereum has faced periods of degraded performance during peak demand. However, the frequency of Sui’s issues — two major outages in six months — raises legitimate questions about the network’s readiness for enterprise-grade applications.
For developers choosing a blockchain to build on, reliability is increasingly becoming a deciding factor alongside transaction speed and cost. Networks that can demonstrate consistent uptime have a significant competitive advantage.
## FAQ
**How long was the Sui network down?**
The outage lasted approximately six hours, from 14:15 UTC to 20:32 UTC on May 28, 2026.
**Were any user funds lost?**
No. The Sui team confirmed that no user funds were lost during the outage. The issue was related to transaction processing, not security.
**What caused the outage?**
A crash bug in the gas charging logic of the version 1.72 software release. Gas charging handles transaction fee calculations — a critical function that, when broken, stops the network from processing transactions.
**Has this happened before?**
Yes. This is the second major outage for Sui in 2026, following a similar incident in January. The network has promised a detailed post-mortem to explain what went wrong and what safeguards are being implemented.
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*Sources: CoinPedia, CoinDesk, BeInCrypto, Sui Network Official*
