On August 12, a routing failure at infrastructure provider TeraSwitch brought Solana within striking distance of a transaction finality halt, temporarily knocking 28.83 percent of all staked SOL offline while the network itself continued producing blocks.
The incident began when a default route advertised out of TeraSwitch’s Miami site propagated across the provider’s backbone, causing simultaneous disconnections at twelve locations across Europe and Asia-Pacific. According to Marinade Finance, the liquid staking protocol that first flagged the disruption, the outage affected roughly 90 validators and pushed 28.83% of staked SOL into delinquency—just shy of the 33.34% threshold at which the network would stop finalizing transactions.
“Solana got 86% of the way to a halt this morning and it barely registered anywhere,” Marinade noted on X. “28.83% of staked SOL went delinquent. Finality stops at 33.34%.”
Despite the severity, the Solana Foundation emphasized that the network never stopped processing transactions. Jacob Creech, a technology executive at the Foundation, wrote:
“Last night an infrastructure provider used by some Solana validators had a failure. You probably didn’t notice, because the network didn’t: blocks kept producing and transactions kept landing.”
Of 699 staked validators, 597—approximately 85% —continued voting, and affected nodes recovered within 33 to 40 minutes. Validators enrolled in the Solana Foundation Delegation Program were unaffected.
TeraSwitch’s autonomous system, AS20326, held 118.9 million SOL, or more than a quarter of the network’s total stake, at the time of the incident. Marinade reported that 94 percent of that stake went dark simultaneously. The provider restored routing after roughly ten minutes of diagnosis and 33 minutes of total downtime, though its Miami site remained off the backbone pending further investigation.
While the network’s consensus layer proved resilient, the outage exposed acute infrastructure concentration risk beneath the protocol level. Marinade’s post-incident analysis revealed that the disruption was not confined to TeraSwitch: an additional 14.1 million SOL dropped offline concurrently across Latitude.sh, Limestone, Butterfly Research, and Allnodes, suggesting either a shared dependency or an unlikely coincidence.
“We can’t tell from the data why,” Marinade stated. “Either way, counting stake by hosting provider undercounts what actually falls over together.”
6/ It didn’t stop at that ASN too. Another 14.1M SOL went down in the same minutes on @latitudesh, Limestone, Butterfly Research and @Allnodes.
— Marinade
We can’t tell from the data why. Some shared dependency, or coincidence. Either way, counting stake by hosting provider undercounts…(@MarinadeFinance) August 12, 2026
Recovery data further emphasised redundancy shortcomings. Fifty-nine validators representing 80.2 million SOL returned online in the same narrow window across Amsterdam, Frankfurt, and Tokyo, indicating that automated failovers did not trigger.
“Nobody failed over,” Marinade observed. “They sat there until the routing reconverged.”
Helius, Solana’s second-largest validator, remained down for the full 33 minutes. Of the 74 validators Marinade could measure, only three—operated by Sol Strategies and Lion3d—recovered cleanly.
The event has prompted calls for stricter distribution standards. Marinade announced plans to review concentration caps across autonomous systems, data centers, and backup infrastructure.
Some operators already pursue multi-provider strategies: Coinbase disclosed in its first-quarter report that it distributes its validators across TeraSwitch and Latitude.sh, with backup servers in separate locations to limit single-provider exposure.
The incident also revived memories of November 2022, when German host Hetzner disconnected servers running roughly 40% of validators without halting the network. Yet the latest outage arrives against a backdrop of declining validator counts: active Solana validators fell to 800 in January 2026, the lowest since 2021, down from a peak above 2,500 in 2023. With stake increasingly concentrated among fewer operators and shared infrastructure layers, the episode serves as a reminder that protocol-level decentralization can be undermined by physical-layer dependencies.
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