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Wallet support FAQ

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Brian R. Bondy edited this page Dec 3, 2021 · 16 revisions

My MetaMask or other extension is not working with Dapps

Dapps work by communicating with a special object that Brave Wallet and extensions like MetaMask provide named window.ethereum. Only one wallet can provide window.ethereum to websites. In Brave, we expose a setting in brave://settings/wallet to be able to change which wallet provides window.ethereum.

Here's a description of each setting:

  • Brave Wallet (Prefer extensions) - This is the default. Brave Wallet will expose window.ethereum but allow other extensions such as MetaMask to overwrite it.
  • Brave Wallet - Exposes window.ethereum and prevents sites and extensions from changing window.ethereum.
  • Crypto Wallets (Deprecated) - Gives access to the old deprecated wallet. This option is not compatible with other extensions such as MetaMask.
  • None - window.ethereum will not be provided by Brave Wallet at all. If you have extensions such as MetaMask, is is free to use window.ethereum.

After changing the default wallet, it is best to restart your browser. Why?

  • If you had Crypto Wallets loaded, it won't be unloaded until the next restart. When Crypto Wallets is loaded it will not work properly with other extensions trying to access window.ethereum.
  • Existing already opened tabs will not change to use the new wallet setting, you need a new tab or a browser restart.

When I restored my old recovery words, I got a different address than in the old Crypto Wallets

Early versions of the deprecated Crypto Wallets extension used 24-words and were not BIP39 compliant. This was fixed later on for compatibility with other wallets to be compliant with BIP39.

If you have 24-words and you are restoring your wallet, then a checkbox will appear to use the legacy Brave method.

You should use that checkbox to get back at the same address as your old Crypto Wallets account.

For reference, the difference is:

  • 24 words -> entropy and use entropy as seed
  • Bip39: Valid mnemonic words->entropy->PBKDF2-HMAC-Sha256 and use that as seed

If you used the wrong method, simply restore on top again. Please remember if you are restoring you will replace and lose what your wallet currently has. You can restore from the lock screen on the wallet panel or in brave://wallet.

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