Problem
Old Wallet Won't Open
Old wallet software that won't open is usually a compatibility problem, not a lost wallet. The files underneath may be perfectly readable.
Short answer
An old wallet that will not open is rarely a lost wallet: the software stopped working, not the keys. Identify the format — the era and file type tell you which wallet or tool can read it — then restore with current software. Discontinued apps often published exact import steps before closing.
If yours won't launch because it was discontinued, the company shut down, or it no longer runs on a modern OS, the keys are still there — you just need the right file and the right format. Start by locating the wallet's data files before you touch the software.
Known discontinued wallets
- MultiBit Classic and MultiBit HD: both discontinued; Classic used .wallet files, HD used a 12-word phrase. MultiBit files remain fully recoverable.
- Jaxx Liberty: shut down in 2023; the wallet's HD seed can be imported into current wallet software.
- BRD (Breadwallet): discontinued; its 12-word recovery phrase works in other BIP-39 wallets.
- Samourai Wallet, Toast Wallet, Mist (Ethereum), Ether.li and other early wallets: supported formats or clear migration paths exist.
What to try yourself
- Locate the data files before you touch the software. MultiBit Classic: %APPDATA%\MultiBit on Windows, ~/Library/Application Support/MultiBit on macOS. Bitcoin Core: the Bitcoin data directory. Electrum: ~/.electrum. Write down the paths.
- Do not update or reinstall blindly. Newer versions may migrate, encrypt or refuse old formats. A failed migration can damage the file you need.
- Check the wallet's official migration advice. Many discontinued wallets published exact import steps before closing.
- If you have the recovery phrase (Jaxx, BRD, most HD wallets), restore it into current software and set a new password.
What is realistic
- Discontinued software with files or phrase: almost always recoverable.
- Old Bitcoin Core wallet.dat from 2009-2015: the version matters. Bitcoin Core 30.0 removed the ability to create or load legacy Berkeley DB wallets, so the file is either migrated to the descriptor wallet format or opened with an earlier compatible release — in both cases working from a copy.
- Software that never opens because the OS is gone: the files are what matter, not the OS. A preserved drive or backup is enough.
- A wallet whose data was stored only on a dead, unrecovered drive: this becomes the broken computer case — see that page.
What is not realistic
A wallet where neither files nor phrase nor backup exists anywhere: there is nothing to open.
What not to do
- Do not throw away the old computer, drive or backup media until the wallet is recovered or you have an honest verdict.
- Do not let "update" wizards convert files before you have copies.
- Do not pay services that claim to "unlock" the wallet over the internet without a clear, written process.
When professional help changes the outcome
Legacy wallet recovery is about knowing what the file is: identifying the format from its contents, extracting keys from old database records, and converting them safely to a modern wallet — without a full node sync, and without custody of your funds. Request a confidential assessment.