edit: i found 1 private key backup and it works with an older password but it still asking for the
wallet password and everything i enter is wrong with "could not decrypt bytes" error message
If you have a key file which works with an older (or any) password, you should be able to create a new wallet and then import that key file. Hopefully the older key file has all of your keys that have a balance...
I have a multibit wallet i havent used since last year with a lot of btc in it
the password is a long mix of numbers and words ,something like
"Chicken67895January1952586469643"
I have tried it as many times as i can think off and cant figure out why its keeps
saying its wrong ,there are only 2 capitalised letters and im pretty sure i didnt
enter it wrong twice in a row
any ideas ?
btcrecover supports password recovery of MultiBit key files, however it's hard to tell from your description how many different combinations of passwords you'd need to check. If you'd like to give it a try, you can start with
the Quick Start section in the Tutorial here.
In particular, you'll need to know exactly which words you may have used, and you'll need to narrow down what those long numbers look like. If the numbers really are that long, and if you don't remember any other details on what the numbers were, then I'm afraid there are way too many possible combinations to try...