TLDR
- Polygon applied a tough fork to deal with a bug that induced a 15-minute delay in transaction finality.
- The bug affected components of the community, inflicting disruptions to validators and RPC companies.
- Polygon’s engineers rolled out emergency updates, which restored regular community operations.
- The defective milestone proposal was recognized as the foundation reason for the finality delay.
- Polygon efficiently accomplished the onerous fork, making certain milestones and checkpoints resumed processing usually.
Polygon has restored full community stability after addressing a bug that delayed transaction finality by quarter-hour. The problem disrupted components of the Polygon ecosystem, affecting validators and RPC companies. Polygon engineers rolled out emergency updates to resolve the bug, which induced sure nodes to halt. The community now operates usually with finality processing restored throughout the ecosystem.
Polygon’s Community Faces Momentary Disruption As a result of Defective Milestone
The problem started early Wednesday, affecting Polygon’s Bor block producer and Erigon knowledge entry layer. A defective milestone proposal induced disruptions, halting some Distant Process Name (RPC) companies and validators. Whereas the blockchain continued producing blocks, the defective milestone delayed native finality. This left components of the community struggling to course of quick, deterministic finality.
According to Polygon’s crew, the bug occurred beneath sure node configurations. Engineers shortly recognized the issue and took steps to repair it.
“Restarting affected nodes resolved the problem for a number of validators and RPC suppliers,” Polygon’s crew stated.
UPDATE:
The onerous fork has been efficiently accomplished, and milestones are actually processing usually together with state sync. Checkpoints are going by means of and consensus finalization has been totally restored on Polygon PoS.
We are going to proceed to observe the community intently to make sure… https://t.co/UwiAYdcKXu
— Polygon Basis (@0xPolygonFdn) September 10, 2025
The issue turned extra obvious when Polygonscan, the community’s block explorer, confirmed no updates for over 5 hours. Polygon later clarified that Polygonscan’s nodes had stopped after a defective milestone was generated by Heimdall, the mission’s consensus engine. To deal with the state of affairs, Polygon switched to operational nodes and ensured that block manufacturing remained energetic.
Polygon Resolves Bug with Hard Fork Replace
To resolve the finality subject, Polygon deployed a tough fork at 3 p.m. UTC, introducing Bor model 2.2.11-beta2 and Heimdall model 0.3.1. The hard fork purged the defective milestone, making certain that milestones and checkpoints finalized usually. Polygon confirmed the improve was profitable and that transaction finality had returned to regular throughout the community.
“Milestones are actually processing usually together with state sync, and checkpoints are going by means of,” the crew introduced.
Polygon’s community has now resumed full operations with all techniques functioning as anticipated. The onerous fork was essential to appropriate the defective milestone and restore the finality course of, which had been disrupted.
Sandeep Nailwal, Polygon’s co-founder, defined the reason for the disruption.
“The foundation trigger got here from a defective milestone proposal that pushed some Bor nodes onto divergent forks,” Nailwal stated.
Regardless of this, he emphasised that checkpoint finality on Ethereum had remained intact.
Earlier right now, Polygon PoS skilled a disruption the place checkpoint finality on Ethereum was nonetheless energetic, however native quick finality on the chain (i.e. milestones) had been delayed.
For context: milestones are a light-weight different to checkpoints, enabling sooner, deterministic… https://t.co/ulINLtlurV
— Sandeep | CEO, Polygon Basis (※,※) (@sandeepnailwal) September 10, 2025
Polygon engineers proceed to observe the community to make sure no additional points come up. The crew can also be investigating the origins of the defective milestone to forestall related disruptions sooner or later.
This disruption provides to ongoing issues about Polygon’s reliability, particularly after its current Heimdall v2 improve. Whereas Polygon has made a number of enhancements, similar to lowering finality occasions, community stability stays a essential subject. Regardless of the efforts, the overall worth locked (TVL) on Polygon has decreased considerably, dropping from a peak of $9.43 billion in 2021 to only $1.2 billion right now.
The incident comes simply weeks after the Bhilai hard fork, which elevated throughput to 1,000 transactions per second. Whereas these upgrades goal to enhance the community’s reliability, this occasion highlights potential vulnerabilities. Polygon’s native token, POL, has fallen by 30% this yr, reflecting investor issues over the chain’s efficiency.
