Showing posts with label EnPasFltV2. Show all posts
Showing posts with label EnPasFltV2. Show all posts

lsass.exe, failed with status code c0000417 on DISA STIG'd Server Resulting from "EnPasFltV2" Password Filter

If you're working with a Windows Server 2012/2012 R2 server that has had DISA Security Technical Implementation Guide (STIG) mitigations implemented and attempting to promote that server to a domain controller, you will very likely encounter an error that forces the server to reboot automatically. If you see "A critical system process, C:\Windows\system32\lsass.exe, failed with status code c0000417.", in your System log, it has been my experience that the password filter required by STIG ID: WN12-GE-000009 Rule ID: SV-52104r1_rule Vuln ID: V-1131 is the cause of this issue. In order to provision a pre-STIG'd image as a domain controller, this password filter must be disabled.

To disable the password filter:

  • Remove "EnPasFltV2x86" and/or "EnPasFltV2x64" references in the "Notification Packages" value from the "HKLM\System\CurrentControlSet\Control\LSA" registry key.

In a related note, very little documentation is available about compatibility of "EnPasFltV2" with Windows Server 2012/2012 R2 is available. I would recommend that you do not assume that this password filter module is compatible just because the STIG suggests its use. https://msdn.microsoft.com/en-us/library/windows/desktop/ms721766(v=vs.85).aspx