Lost SharePoint Farm Passphrase

It’s okay… it happens.  You can’t retrieve it, but you can reset it using PowerShell.  Make sure that the account you are logged in as is: (1) a farm admin and (2) local admin on server

$passphrase = ConvertTo-SecureString -asPlainText –Force

Set-SPPassPhrase -PassPhrase $passphrase –Confirm

More info on TechNet: https://technet.microsoft.com/en-us/library/ff607568.aspx