Make backup of your wallet’s files

How to find wallet files to make backup

The wallet files like wallet.dat in bitcoin core wallet (litecoin, doge, digibyte, darkcoin “dash” and many more coins) you can find here:

Windows
C:\Users\YourUserName\Appdata\Roaming\Bitcoin (Vista,7,8,10)
Mac
~/Library/Application Support/Bitcoin/
Linux/Unix
~/.bitcoin/

Ethereum Wallet Recovery Service

Multibit and Multibit HD

All the files under these directories should be zipped and backup
Windows locations:

C:\Users\YourUserName\AppData\Roaming\MultiBit\
C:\Users\YourUserName\AppData\Roaming\MultiBitHD\

Mac locations:

/Users/YourUserName/Library/Application Data/MultiBit/
/Users/YourUserName/Library/Application Support/MultiBit/

Electrum like wallets

WIndows locations:

C:\Users\YourUserName\AppData\Roaming\Electrum\wallets\

file names examples: multibit.key, multibit.wallet, wallet.aes