Anza is asking Solana mainnet operators to upgrade their validators to Agave 4.4.1 before epoch 1079 begins on November 6, 2026, at approximately 13:30 UTC. The update includes a critical patch that standardizes the data size for loader-v3 ProgramData accounts to ensure compatibility with an upcoming feature gate activation. Validators running earlier versions risk being excluded from consensus and losing network rewards. The alternative client Firedancer, version 26.10.6, has also been confirmed to meet the new requirements.
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