Transparency is essential for any production blockchain. This page archives every significant Polygon network incident since the chain launched in 2020. Notable events include the March 2022 PoS chain halt caused by a software upgrade issue, and more recent minor incidents such as balance display er

rors on Polygon Portal in March 2026 — resolved within hours with no impact to on-chain operations. Each entry includes the incident start time, affected components, resolution steps, and a link to the official Polygon Labs post-mortem. Over 215 uptime-related incidents have been tracked by monitoring services since August 2021, and the network has maintained an overall uptime record above 99.9%.