Anza Releases Agave 4.4.1 as Solana Validators Face a Fork Deadline
Solana mainnet-beta validators must run the patch before epoch 1079 on November 6, when nodes without it are planned to be forked off the network.
Key Takeaways
- Anza released Agave 4.4.1 on November 5, 2026 and called it an urgent upgrade for Solana mainnet-beta validators.
- The patch applies a minimum loaded data size to loader-v3 ProgramData accounts.
- Nodes that skip the patch are planned to fork off at epoch 1079, around 13:30 UTC on November 6.
Anza, the team behind the Solana (SOL) validator client Agave, released Agave 4.4.1 on November 5 and told mainnet-beta validators to upgrade before epoch 1079. That epoch is expected to start around 13:30 UTC on November 6. Nodes that do not run the patch are planned to be forked off the network.
What the Patch Changes
Agave 4.4.1 applies a minimum loaded data size to loader-v3 ProgramData accounts. Loader-v3 is the Solana program loader, and ProgramData accounts store the executable data of deployed programs. Anza published the change as an urgent upgrade. It said nodes without the patch will follow a different chain than the upgraded majority after the deadline. The announcement did not report any loss of funds.
What Happens to Nodes That Skip the Upgrade
A validator that forks off stops following the canonical Solana network. It can no longer vote on the blocks the rest of the network accepts, and it earns no staking rewards while it sits on the wrong side of the fork. Solana is one of the busiest layer 1 blockchains, and its validators run clients like Agave to take part in consensus. SOL traded near $90 on November 6, according to the Solana price chart on Coinranking. The patch affects validator software only. It does not change staking accounts or the SOL held in wallets.
The Deadline on November 6
Anza announced the upgrade on November 5 and asked operators to upgrade and then monitor their nodes. Epoch 1079 is the cutoff: nodes still running an older client at that point are planned to be forked off at around 13:30 UTC on November 6. The team published the notice in its upgrade announcement on X. Agave is the main validator client on Solana, so the patch needs wide adoption among operators before the epoch boundary for the network to move on one chain.
Frequently Asked Questions
What Is Agave 4.4.1?
Agave 4.4.1 is an urgent patch for Agave, the validator client Anza maintains for Solana. Anza announced it on November 5, 2026.
Why Must Solana Validators Upgrade to Agave 4.4.1?
Nodes without the patch are planned to be forked off the network when epoch 1079 starts, around 13:30 UTC on November 6, 2026.
What Does the Agave 4.4.1 Patch Change?
It applies a minimum loaded data size to loader-v3 ProgramData accounts, which store the executable data of deployed Solana programs.
When Is the Agave 4.4.1 Upgrade Deadline?
Epoch 1079 on November 6, 2026, which is expected to start around 13:30 UTC.
Do SOL Holders Need to Do Anything for Agave 4.4.1?
No. The announcement addresses mainnet-beta validator operators and does not ask token holders to take any action.
Sources
Prices and market data: Coinranking.
