Uninitialized Pointers in DHCPSSVC.DLL Cause Access Violation

ID: Q134701

The information in this article applies to:

Microsoft Windows NT Workstation version 3.51
Microsoft Windows NT Server version 3.51

SYMPTOMS

When a remote procedure call (RPC) tries to determine the size of the LPWSTR variable in the DHCP_Subnet_Info structure on your Windows NT DHCP server, DHCPSSVC.DLL causes an Access Violation.

CAUSE

The pointers for the NetBiosName and HostName strings point to random memory addresses.

Due to a problem in DHCPSSVC.DLL the NetBiosName and HostName strings are not initialized to NULL, even though they appear to be NULL in the SubNet information subkey of the Windows NT Registry.

RESOLUTION

To correct this problem, install the latest U.S. Service Pack for Windows NT version 3.51.

STATUS

Microsoft has confirmed this to be a problem in Windows NT version 3.51. This problem has been corrected in the latest U.S. Service Pack for Windows NT version 3.51. For information on obtaining the Service Pack, query on the following word in the Microsoft Knowledge Base (without the spaces):

S E R V P A C K

Additional query words: prodnt

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