Lost double encryption password on blockchain.info, now what?

[SirChiko]

The title is self explanatory... Is there anything to be done?

Sorry my friend, it's probably lost. How many coins did you have there?

[ranochigo]

The title is self explanatory... Is there anything to be done?

If you have the wallet backup in your mail, Create another account on blockchain and import it might work.

I believe the backup would also most likely be encrypted by a password. Even if he gets the backup, he would need password to crack the private key and spend the coins inside there. If you know the password, just import it like a normal wallet using electrum or multibit with webcam.

[ronaldo40]

Just be careful next time. Back up your password and your wallet. How much the amount on it?

I never back up. whether when lost password encryption, can not be recovered?

[Divinespark]

You lose your coins, that's what...unless you can remember your pw
Check old emails, you may have an auto back up file somewhere

[twister]

If you don't have backup of your keys and you don't have password written somewhere, then sorry to say this but your Bitcoins are lost forever. Blockchain.info does not saves your password and they make this very clear.

[crypto-recovery]

I'm going to assume that the double encryption password that you've mentioned is Blockchain.info's secondary password that prevents you from sending Bitcoin out of your account unless you know the secondary password.

This secondary password can be decrypted using the same brute-force techniques that you might use to recover your main password.  If you're doing it by hand, you simply have to login to your Blockchain account with your Wallet ID and main password, then attempt to send Bitcoin to a new wallet.  This will bring up the prompt for the secondary password.

I typically encourage people to spend a couple of hours meticulously trying to brute force their passwords by hand.  This has a higher success rate than you might guess if you take the time to pull together a list of probable passwords.  We have documented this process here: https://cryptoassetrecovery.com/blog/recover-lost-blockchain-password/

Take care,
Chris