To get it working, you need to use the “ntdsutil” tool to modify “MaxPageSize”. The below screenshot demonstrates the steps to set “MaxPageSize” to 5000. No reboot is required. The new setting is applied after “commit changes”.
A more detailed step can be found at: https://support.microsoft.com/en-us/kb/315071
After enlarge the “maxpagesize”, WFilter is able to sync AD users.