Mengatasi problem windows xp client tidak bisa akses share nya windows 7

 Disable SMB2 on Windows 7 File Server with Windows XP Clients

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters

SMB2 = 0 (DWORD, default: not present assumes 1, recommended: 0 if using clients with older Windows variants)

SMB1 = 1 (DWORD, default: not present assumes 1-enabled, recommended: 1 - no need to add or change)

Under Windows 8/10/2012 Server, you can also disable SMB2/3 using PowerShell cmdlets: