Reset SharePoint Farm Passphrase Using PowerShell

You can use the following script to reset the SharePoint Farm passphrase. You must be logged in as a farm admin and a local admin on the server.

No, unfortunately, you can not retrieve the passphrase.

1. $passphrase = ConvertTo-SecureString -asPlainText –Force
2. Set-SPPassPhrase -PassPhrase $passphrase –Confirm


More info for Microsoft