Hi at all On my dm sometimes i see this in log: kinit succeeded but ads_sasl_spnego_gensec_bind(KRB5) failed for ldap/dc4 No logon servers are currently available to service the logon request. That is because my dc run with samba 4.17 and datamember is on samba 4.9 ??? Must i upgrade to fix this problem ?? Thanks in advantage Corrado Ravinetto Sistemi informativi corrado.ravinetto at lanificiocerruti.com <mailto:corrado.ravinetto at lanificiocerruti.com> T: +39 015 3591283 [Lanificio F.lli CERRUTI] Lanificio F.lli Cerruti S.p.A. Via Cernaia 40, 13900 - Biella (BI) Italy www.lanificiocerruti.com <http://www.lanificiocerruti.com/> [Twitter] <https://twitter.com/Lan_Cerruti> [Facebook] <https://www.facebook.com/LanificioCerruti> [Instagram] <https://www.instagram.com/lanificiocerruti/> Rispetta l'ambiente, non stampare questa mail se non necessario Respect the environment, don't print unless necessary [Unesco]