SharePoint Farm Passphrases and Configuration Cache
While adding a server to a client’s farm we discovered that they had lost track of their farm passphrase.
No biggie, Set-SPPassPhrase to the rescue, right?
I threw down one of these and expected I’d be good to go:
$passphrase = ConvertTo-SecureString -string "y0L0$wag" -asPlainText -Force Set-SPPassPhrase -PassPhrase $passphrase
When it came time to add the new server to the farm, I got one of these for my trouble:
Failed to connect to the configuration database. An exception of type System.ArgumentException was thrown. Additional exception information: Error during decryption. Ensure the passphrase is correct.
I knew the passphrase was correct, you don’t forget a passphrase like
y0L0$wag, not actually
y0L0$wag but equally memorable).
The culprit: cache.
Clear your configuration cache
I adapted this Clear-SPConfigCache script to flush the configuration cache on all core SharePoint Servers. You don’t need to worry about SQL, SharePoint Add-In hosts or Office Online Servers. Once complete, I was back on my merry way, adding servers left, right and centre.