What happens to my miner when Monero hard forks?

When Monero hard forks, your miner can keep earning only if its software and the services it uses follow the new network rules. You may need to update your mining software, but a hard fork does not automatically mean your hardware becomes useless or that Monero changes its mining method.

What changes at the fork

A hard fork is a change to the rules that computers on the Monero network must follow. It normally activates at a planned block height—a particular block number in the network’s record of transactions.

Before that block, the old rules apply. From that block onward, updated software follows the new rules. Older software may stop accepting new blocks or keep working on an incompatible version of the chain.

For your miner, the important question is what the upgrade changes:

• A change to transaction or block rules may mainly require updates to the network services behind your miner.
• A change to the mining algorithm—the calculation your device performs—requires compatible mining software.
• A change to pool connections or mining jobs may require a miner update or new settings.

Not every hard fork changes all three.

What you need to update

Your next step depends on how you mine.

If you use a mining pool, you combine your work with other miners and share rewards. The pool operator updates its network software. You still need to check whether your own miner needs a new version or different connection settings. The pool cannot fix outdated software running on your device.

If you mine solo, you try to find blocks without sharing rewards through a pool. You need an updated node, the software that checks and shares Monero transactions and blocks, plus compatible mining software.

If you mine in your browser, the website may deliver updated mining code when you reload the page. But an already open tab can continue running an older version. Follow the service’s instructions, reload when advised, and confirm that it still accepts your work. Do not assume that every browser-mining service supports an upcoming upgrade.

What you might notice

A supported miner may pass through the fork with little visible interruption. Your pool might briefly pause or reconnect while its systems switch over.

If something is incompatible, you may see:

• Connection failures or repeated restarts.
• Rejected shares, which are small proofs of work submitted to a pool.
• A warning that your node is outdated or no longer keeping up.
• Your device working hard while your credited earnings stop increasing.

A displayed mining speed is not proof that you are earning. Check accepted shares and your pool or service dashboard after the fork.

What happens to your hardware and rewards

Monero has used RandomX, its current mining algorithm, since November 30, 2019. That upgrade replaced earlier CryptoNight variants and favored general-purpose processors, or CPUs. A future algorithm change could affect hardware performance, but a hard fork alone does not imply one.

Your existing XMR does not disappear during a normal network upgrade. Unpaid pool rewards remain subject to the pool’s accounting and payout rules.

Be wary of “mandatory fork upgrades” that ask for your wallet’s secret recovery words. Updating a miner does not require handing those words to a website or support agent.

The bottom line

Before a fork, check official Monero announcements and your mining service’s instructions. Update what they require, then verify accepted work afterward—not just a running miner.