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NoLMHash

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

NoLMHash

HKLM\SYSTEM\CurrentControlSet\Control\Lsa

Data type Range Default value

REG_DWORD

0 | 1

0

Description

Specifies whether Security Accounts Manager (SAM) stores the LAN Manager (LM) hash of the user's password. The LM hash of the user's password is necessary to authenticate downlevel clients that cannot use NTLM or NTLMv2 authentication.

Value Meaning

0

SAM stores the message digest of the user's password.

1

SAM does not store the message digest of the user's password.