Make the following changes on all LDAP servers in the domain for which you want to configure auditing.
Log in as an administrator to a computer in the domain that you want to configure.
In the Start menu, type regedit to open the Registry Editor.
Add the following values on the Domain controller registry.
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Diagnostics] "15 Field Engineering"=dword:00000005 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NTDS\Parameters] "Expensive Search Results Threshold"=dword:00000001 "Inefficient Search Results Threshold"=dword:00000001 "Search Time Threshold (msecs)"=dword:00000001