Hello you all,
I have a setup with a Debian 8 running Samba 4.5.1. as AD domain. I Was updating it to the newest version, but stopped cause, for some reason my Winbind auth isn't working anymore. I can't successfully auth on plain and Kerberos, but Winbind is a no go

wbinfo -a DOMAIN\\squid%'password'
plaintext password authentication succeeded
challenge/response password authentication failed
wbcAuthenticateUserEx(DOMAIN\squid): error code was NT_STATUS_WRONG_PASSWORD (0xc000006a)
error message was: Wrong Password
Could not authenticate user DOMAIN\squid with challenge/response

Any tips? Keep upgrading it (it's built on the source) hoping the problem will vanish (if it not getting worse) on some upgrade?

BTW, I don't have at the moment another server. But if anyone has the steps to join it on domain and become the FSMO, tell me how