I am running into an odd issue; new 2012r2 domain where the DC will reboot whenever a client is joined or disjoined from the domain.

Setup is a 2012r2 DC running AD & DNS and a s2012r2 DHCP server both statically set IPs; DNS pointing to DC IP. DHCP has scope set for subnet and secure dynamic updates on.

Everything works until I join a member server; I join OK then reboot and thats when the DC says it needs to reboot due to lsass crashing. error is:

Faulting application name: lsass.exe, version: 6.3.9600.17415, time stamp: 0x545042fe
Faulting module name: AUTHZ.dll, version: 6.3.9600.17796, time stamp: 0x552c452f
Exception code: 0xc0000005
Fault offset: 0x0000000000034704
Faulting process id: 0x210
Faulting application start time: 0x01d1a61763719568
Faulting application path: C:\Windows\system32\lsass.exe
Faulting module path: C:\Windows\system32\AUTHZ.dll
Report Id: 9c12ca77-1219-11e6-80ce-00155dc83203
Faulting package full name:
Faulting package-relative application ID:


Everything seems OK after that though; unless I want to disjoin to member- DC crashes again with same error. This happens with member being Server 2012r2 or Win10.



I have never seen a DC do this and cannot find info linking lsass and AUTHZ.dll crashing