Overview

• Polygon’s PoS network had been confirming transactions with a 10–15 minute lag due to a milestone-handling bug affecting the consensus layer, even as blocks and checkpoints continued.
• Polygon said the hard fork was completed on September 10 at 15:00 UTC, reporting that milestones and state sync are processing normally and consensus finalization is fully restored.
• The slowdown was linked to issues on some Bor/Erigon nodes and external RPC providers, with many operators recovering through restarts and a subset rewinding to block 76273070 before resyncing.
• Polygon emphasized that user funds were not at risk and that Ethereum checkpointing and block production were unaffected, though some third-party services and Polygonscan saw brief interruptions.
• POL fell roughly 3% during the incident to around $0.26, with later updates noting a rebound after the fix was deployed.