Managing networks

Add a network using Chainlist

If you want to add networks to MetaMask, accessing Chainlist is one of the easiest ways to d...

Custom networks missing after reinstalling or restoring from Secret Recovery Phrase

When you reinstall MetaMask, custom networks need to be re-added. This is because MetaMask e...

Error 'Internal JSON-RPC error' when trying to interact with other networks

If you are interacting with sidechains or custom networks, we highly recommend you read our ...

How to add a custom network RPC

Learn how to add and edit custom networks and RPC URLs.

How to connect to Linea on MetaMask

Great news, Linea is live and native to MetaMask! This means that you can connect to Linea w...

How to remove networks

As they're essentially instructions that point MetaMask in the correct direction (towards an...

The risks of connecting to an unknown network

You should always think twice before you connect your wallet to a new blockchain network: be...

User Guide: Custom networks and sidechains

New to crypto and web3?

Verifying custom network information

When a website requests that you add a custom network to MetaMask, you are presented with th...