I forgot wallet password

[Gugg-Z]

[lncli] rpc error: code = Unknown desc = invalid passphrase for master public key
I forgot wallet password, how can I retrieve it?
I only saved mnemonic phrase.

[guggero]

You can't, otherwise the password wouldn't be secure after all. What you can do is re-create the wallet from the seed:

1. Stop lnd. Rename ~/.lnd/data/chain/bitcoin/mainnet/wallet.db to wallet.db.backup (or something like that).
2. Delete ~/.lnd/data/chain/bitcoin/mainnet/macaroons.db and all *.macaroon files in ~/.lnd/data/chain/bitcoin/mainnet/.
3. DO NOT DELETE OR MOVE ANY OTHER FILES!
4. Start lnd.
5. Run lncli wallet create and enter the mnemonic phrase.
6. This will re-scan the chain and can take a couple of hours, don't interrupt the process and watch the log for progress.
7. Once the wallet is re-scanned, all channels should come online again normally.

[Gugg-Z]

I cant find wallet.

[guggero]

Did you use a passphrase for the mnemonic seed when you created that? Looks like the wallet wasn't created because the passphrase was incorrect.

[Gugg-Z]

So should I use cipher seed passphrase?
I didnt use cipher seed passphrase when I created old wallet.

[guggero]

Yes, the cipher seed passphrase. Well, either you entered the seed phrase incorrectly or you did use cipher seed passphrase when you created the wallet.

[Gugg-Z]

Many thanks for your kind and warm help.
I restore my wallet.