How to Recover your Lost MyEtherWallet (MEW) Password

Google shows tens of thousands of results for the query “lost myetherwallet password”.  While not all of those results represent a person that has lost access to their Ethereum or tokens, many do.  In this article we’re going to lay out a process for recovering access to your wallet.  This process won’t work 100% of the time, but at the least you’ll know that you have exhausted all possibilities.

An Introduction to MyEtherWallet

First, let’s just talk briefly about (MEW).  Although you can access the site over the web, it is not an online wallet.  That is, you are not creating an account on — you are simply using tools published by MEW to create and manage a private key, so that you can interact with the Ethereum blockchain.

One implication of this is that your  private key is not stored by, and there’s no account on that website that you can log into, and no set of customer support folks that can change your password to your private key if you lose it.

The Simplest Way to Recover your Wallet

If you saved your 12 word mnemonic phrase when you created your MEW wallet, you can recover the wallet at any point by using that phrase.

  • Go to
  • Click “Send Ether & Tokens” in the toolbar at the top
  • Select “Mnemonic Phrase” as the answer to the question: How would you like to access your wallet?
  • Enter your 12 word phrase

However, if you have gone through the trouble of finding this article it is unlikely that you have your 12 word recovery phrase available.  So, let’s pull together the resources you need to recover your wallet without the recovery phrase.

Find your Keystore File

The first step in recovering access to your wallet is to locate your Keystore file.  The Keystore file is essentially a copy of your Ethereum private key that has been encrypted with the password that you chose when you created a new wallet using MEW.

After you created that wallet, MEW encouraged you to download your Keystore file and save it to a safe location.


The Keystore file is written in a format known as JSON, and so you’ll occasionally see people refer to this as their MEW JSON file.

By default, MEW uses the following naming conventions for the Keystore file:

UTC–YYYY-MM-DDTHH-MM-SS.[46 character string]

Here’s an example of a Keystore file that was created on Feb 9, 2018:


A JSON file is just a human- and machine-readable text file that contains a series of keys and values.   Here’s an example of the data stored within the Keystore file:


Generally speaking, you should be able to locate Keystore files on your hard drive by searching for filenames that begin with “UTC-“.

  • If you find one Keystore file, and the dates in the filename match the timeframe when you created your wallet, you’ve probably found the file you’re looking for.  Congratulations!  You’re ready to move on to figuring out your password.
  • If you find multiple Keystore files, you can use the process mentioned below to weed out the files whose password you know, leaving you with the Keystore file whose password you don’t know.
  • If you don’t find any Keystore files, there are a couple of possibilities:
    • Did you use a different computer to create your MEW wallet?  If so your Keystore file may be stored on that computer.
    • Might you have an automated backup that might include your Keystore file?

How to Find the Correct Password

Now that you have located your Keystore file you can begin to test passwords against it.

The first step is to create a list of passwords that you think might be the right password.

  • Many people keep their cryptocurrency passwords under lock and key.  Check your safe (if you have one) and see if you have your password written down.
  • You may have just a few passwords that you use for everything.  While this is not optimal for security, it may make the process of finding your wallet password simple.
  • You may want to look at your password manager, whether it is the one integrated into your web browser or a 3rd party password manager, like

No matter how and where you store your passwords, pull together your best guesses as to the password you might have used.

How to Check a Password Against your Keystore File

Note: does not need to be connected to the internet to test passwords against a Keystore file.  All of the functionality occurs within your browser.  So, in just a minute we’re going to recommend that you disconnect wifi (and/or your network cable) so that it’s harder for anyone to snoop on your password attempts.

  • Open your web browser and go to:
  • Click “Send Ether & Tokens”
  • Select “Keystore / JSON File” as the answer to the question: How would you like to access your wallet?
  • Use the “Select Wallet File” button to navigate and load your Keystore file
  • MEW will now display a message that says: “Your wallet is encrypted. Good! Please enter the password.”
  • Disconnect your wifi or wired connection to the internet at this time to improve your security.
  • Enter your first password guess and click the “Unlock” button.
  • If you see a message that says: “(error_07) Please enter a valid password. Error: Key derivation failed – possibly wrong passphrase” then you’ll know that this password guess is not correct.  Go back to the first step and repeat with your next password guess.
  • If you have the right password you’ll be taken to a page that allows you to enter a receiving address for the cryptocurrency you want to send.  This is the correct password!

If you try all your password guesses and you have not found the correct password, don’t despair.  Now is when you start trying different combinations, mis-spellings, typos, etc.

We also provide a password recovery service, and we would be happy to take your Keystore file along with your password guesses and run millions of variations to find your password.  Contact us if you’d like more information.

This is the page you’ll see when you have the right password.


How can I figure out where I created my Bitcoin wallet?

We often get some variant of the following question:

I created a Bitcoin account back in 2014, but I’m not sure where my wallet is.  Can you help me find it?

In general, we can’t find it for you.  We would need access to too many of your accounts (email, dropbox, etc) and possibly your computers themselves.

But, that said, with a little legwork there’s a good chance you can find the account yourself.  Then, if you still need help recovering your password, contact us.

How do you figure out what service you used to create your bitcoin wallet?

As you might guess, tracking down a service that you used three or four years ago has the potential to be complicated.  However, there are a couple of easy steps that you should take first.  If you’re lucky, one of these will work.

If these don’t work, keep reading. has historically been the most popular wallet provider, so if you have no idea what service you might have used this is a good place to start.  Here are two quick ways to check whether you created an account on Blockchain:

  • Search your email for a message with the subject line: Welcome to My Wallet.  If you find such a message, then you created an account on Blockchain, and your Wallet ID will be included in the email.
  • If that doesn’t work, you can take the following steps:
    • Open your web browser and go to:
    • It’s possible, but unlikely that your wallet id will be displayed in the “Wallet ID” field of the login form
    • Click on “View Options” in the lower right-hand corner of the login form
    • Look for the option that says “I’ve lost my Wallet ID: Email me a reminder with my Wallet ID to my email address”
    • Click “Remind Me” next to that option
    • Enter the email address you used to create the wallet, fill out the “captcha” and submit the form
    • If you correctly identified the email address that you used to create your wallet, then should email you the Wallet ID within a few minutes.

If those two steps didn’t work, there are two possibilities:

  • You used a different email address than the one you checked, in which case you can run the same tests on those other email addresses.
  • You used a different wallet.

Take a Few Minutes to Get Organized

If those first, simplest checks didn’t work then it’s probably worth taking a few minutes to get organized.  Here is the initial research that we recommend:

  1. Get a good estimate of when you acquired the missing cryptocurrency.
    • Might the purchase be mentioned on a bank or credit card statement?
  2. Create a list of all the email addresses you might have used during that time, and see if you can get access to those email accounts
  3. Do you have a place (ex: a safe or a safe deposit box) where you might have stored printouts with passwords, paper wallets, security codes, etc?  Check to see what backup information you might have.
  4. Think through the physical computers that you might have used.  Which of those do you still have access to?

Start with Email

Many online wallets and exchanges will send a welcome email when you first register an account.

First, figure out which email accounts you might have used to create the wallet.

Next, go through each of those email accounts and search for “Welcome” emails from the following services:

The following services have been reported to be defunct.  If your coin was stored on one of these services it is most likely lost, as they all appear to have shut down after suffering from crippling thefts:

The following wallets can be considered at least partially “online” wallets, although many have mobile and /or desktop versions too:

  • (launched mid-2017)
  • (launched 2015)
  • (launched in Feb. 2014)
  • (launched in Aug. 2011)
  • (launched in Oct. 2012)
  • Copay (launched in Oct. 2016)
  • Cryptonator (launched in 2014)
  • Green Address (launched in April 2014)
  • Jaxx (launched in 2014)
  • (launched in July 2011)
  • Mycelium (launched in Sep 2013)
  • Multibit 
  • Xapo (launched to the public in March 2014)

The following are desktop and mobile-only wallets:

  • (launched in Oct. 2014)
  • Armory (launched Jan. 2012)
  • Bitcoin Core
  • Bitcoin Knots
  • Bread Wallet (launched in 2014)
  • Circle
  • Coinomi
  • (launched in 2014)
  • Electrum (launched Nov 2011)
  • Exodus (launched in July 2016)

The following are Paper Wallets:

  • BitAddress

Search your Hard Drive

Are you still using the same computer that you used at the time you created the wallet?  If so, it’s possible that you saved a backup of the wallet to your computer.

Here are some typical filenames / extensions for wallet backups:

  • address.db
  • mbhd.wallet.aes
  • *.vault
  • *.wallet
  • wallet.dat
  • wallet.aes.json
  • wallets

Did you have a Dropbox Account?

Might you have backed up your wallet to your Dropbox account?  You can try searching for the aforementioned filenames / extensions on


There are many ways to back up your hard drive.


  • Time Machine is a standard Mac application that you can configure to take “snap shots” of your hard drive.  Do you have a Time Machine snap shot from the time you created your account?
  • Apple sells an external hard drive called a Time Capsule — did you use this to backup your hard drive?
  • There are many services, like that will remotely back up your hard drive.

Check your Browser

There are at least two options here:

First, most modern browsers give you an option to “Manage Passwords”.  If you created a new account and you asked your browser to remember your username and password then you may be able to find the name of the site (and potentially your username and password) in your browser’s password manager.

Second, if you created this service recently, perhaps your browser history has stored the domain name of the service that you used.

Frequently Asked Questions

If I know the address where I received Bitcoin can I figure out what service created that address?

The answer, unfortunately, is: No

A bitcoin address is derived from your private key.   Your private key is a random 256-bit number.  Every wallet uses the same process to derive a bitcoin address from a private key.  Therefore, there’s no way to figure out where you created a wallet based on one of its bitcoin addresses.