Three different problems
A forgotten password is not the same as a damaged file, and neither is the same as selecting a wallet from another directory. Record the exact error and the exact file copy used. If a known password stopped working after a copy, update or restore, compare the evidence before expanding a password search. The failure message alone cannot identify the cause.
When wallet words survive
The original help describes a restore-password flow using wallet words. WalletSummary and WalletManager retain encrypted credential and backup-key material that helps explain this historical feature. It is a local wallet mechanism, not an email password reset or a service that the original developers can perform remotely. Do not enter wallet words into a website offering to reveal the password.
When only encrypted wallet data survives
A bounded candidate search can test plausible remembered variants if the tool supports the actual file format. Write down hypotheses about length, spelling, keyboard, language, capitalization and separators. Start with a small, explained group rather than multiplying every possible variation at once. Keep a record of candidate coverage and the exact verifier used.
What BTCRecover contributes
BTCRecover documents password recovery and lists MultiBit HD support. Use its current installation instructions and test suite before examining a working copy. Tool support does not mean that every backup family or historical version is interchangeable. Confirm which loader is handling the file; an encrypted ZIP backup is a distinct case. This library does not claim a measured search speed or a guaranteed outcome.
Interpret a negative result narrowly
“No match” means no candidate matched under that run’s settings, input and validation assumptions. It can reflect an incomplete candidate set, the wrong file, unsupported data, a format mismatch or a genuinely different password. Capture the tool version and completed coverage. Do not convert one unsuccessful run into a claim that the underlying Bitcoin is permanently lost.
Before requesting help
Send mail@keychainx.io a description of the file family and problem, not the password guesses themselves. KeychainX can discuss what an assessment requires and how information should be handled. No wallet recovery or upload happens through these pages.