Today I faced a problem, I have to add s server to an existing farm that I have not deployed and there is no documentation of the process, so is it not posible to obtain the passphrase, but you can reset the existing passphrase by using Powershell 🙂
So let’s begin!:
Get-Help Set-SPPassPhrase -Detailed
To easily reset your SharePoint Passphrase
$passphrase = ConvertTo-SecureString -String “mySharePoint2010password” -asPlainText -Force
Set-SPPassPhrase -PassPhrase $passphrase -Confirm
Albandrod's Memory 