If you want to use the Synchronize to WordPress/AD feature you need to set up a cron job.On Windows operating systems you have to use the Windows Task Scheduler to accomplish this.

This how-to is specific for Next Active Directory Integration. Please see this article how to add cron jobs and scheduled tasks on Windows.

Add the scheduled task

On your Windows server log on with a privileged account, e.g. Administrator
Go to Start > Control Panel > System and Security > Administrative Tools > Task Scheduler
In the right panel click on Create Basic Task

Enter a name like 'Sync to WordPress* and click Next
On the next page define the scheduled dates when the task has to run. Every night should be often enough.
On the Action page select Start a program

Using PowerShell

How to setup a cron job on windows server

PowerShell is available on Windows 7 and later, as well as on Windows Server 2008 R2 and later
The Program/script input field must contain powershell
The input field Add arguments (optional) must be populated with the following command
Some parameters must be adjusted e.g. ###SERVERURL### (must point to the WordPress instance), ###TOKEN### (must contain your auth code)

Make sure you logged on as an administrator or you have the same access as an administrator. Start - Control Panel - System and Security - Administrative Tools - Task Scheduler. Action - Create Basic Task -Type a name and Click Next. Follow through the wizard.

In case you are using Kerberos authentication, you have to append the Parameter -UseDefaultCredentials to the Invoke-WebRequest. You also have to make sure that the user under which the scheduled task is running, has a valid Kerberos token and is able to access the website.

Click Next and Finish

The added task will automatically run on the next scheduled date.

Using wget

If you are using Kerberos as a method for SSO, please go with the PowerShell solution described above.

Download the wget setup package from http://gnuwin32.sourceforge.net/packages/wget.htm or use this link link to sourceforge. Please note that the ZIP file does not include the required libraries.
Let the setup programm install wget into e.g. c:/wget
The Program/script input field must point to the previously installed wget.exe (c:/wget/bin/wget.exe)
- The input field Add arguments (optional) must be populated with the wget parameters provided in NADI on the Sync to WordPress respective Sync to AD page, like
--post-data 'next_ad_int-task=sync-to-ad&auth-code=MFuyIpDJEEOUhw8cLsB0' http://localhost/wp-admin/admin.php

Click Next and Finish

The added task will automatically run on the next scheduled date.

A scheduling service (a.k.a. task scheduler) is an important constituent of a system for the automatic execution of recurring tasks. Z-Cron is a scheduler which you can use to run jobs/tasks on your PC time-controlled with a schedule. Z-Cron is a central coordination point for the scheduling and automation of software. In addition to the time-controlled start of applications, the program contains numerous tools which help to ease the automatical and scheduled system administration.

With Z-Cron scheduler you can start and/or quit programs (*.exe, *.com, *.bat) under Windows time-triggered similar to the Unix Cron. A scheduler is one of the most powerful services on a computer system. You can use it to launch all kinds of programs at defined times automatically, for example for backup jobs with Z-DATdump during the night, and no user has to be logged on for that.

Z-Cron can be configured to automatically run at Windows startup. Status information can be sent using Microsoft messenger service or e-mail (per SMTP).
Z-Cron scheduler can also be installed as a system service on Windows 10, 8, 7, Vista, XP or Windows Server 2016, 2012(R2), SBS 2011, 2008(R2) & 2003.