Users can no longer login to RHEL 6 systems using their Windows AD account after SMB1 has been disabled in Active-Directory.

Solution Verified - Updated -


1. As a result of the WannaCrypt ransomware threat, we disabled the SMB1 protocol in our Windows Active-Directory environment. After the change, users were not able to login to Linux-Systems using their Windows AD account.

2. When joining new systems into the Active-Directory domain does not work anymore and fails with the error NT_STATUS_CONNECTION_RESET.


  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Samba-3.x with Winbind enrolled into a Windows AD domain

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