PATCHES PER WINDOWS XP

#modify dword from 1 to 0 in XP clients:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\netlogon\parameters
"RequireSignOrSeal"=dword:00000000 

PATCHES PER WINDOWS 7

step 1: add the subsequents dword value in regedit:
HKLM\System\CCS\Services\LanmanWorkstation\Parameters
            DWORD  DomainCompatibilityMode = 1
            DWORD  DNSNameResolutionRequired = 0

step 2: modify some configuration:
Control Panel - Administrative Tools - Local Security Policy
Local Policies - Security Options
Network security: LAN Manager authentication level
Send LM & NTLM responses
Minimum session security for NTLM SSP
Disable Require 128-bit encryption

