i feel useless ...as maybe i am... but :

1) which is your website ?

2)
there is no such key in my registry

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Servic es\MRXSmb\Parameters\
OplocksDisabled REG_DWORD 0 or 1

nor this key

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Servic es\LanmanServer\Parameters
EnableOplocks REG_DWORD 0 or 1
Default: 1 (enabled)

So