Configure a Local NTP Server

devices rely on an internet time server and a clock source, such as a gps satellite, to synchronize time across devices however, in an offline scenario where devices are not connected to the internet, time synchronization must be achieved using a local network time protocol (ntp) server if you require a local ntp server check with your it team an ntp server may already be provisioned if an ntp server is not already available, create a windows based ntp server by following the steps below before you begin a windows server running windows 7, 8, or 10 is required procedures listed on this page have been tested using windows 10 other windows versions may have a slightly different workflow you must have administrator privileges to configure the windows server requires a basic understanding of windows registry caution should be used when updating the registry configure a local ntp server to configure a local ntp server, you will need to do the following step 1 configure windows time service step 2 update windows registry to create local ntp service step 3 update windows registry to configure time provider step 4 update windows registry to configure announce flags step 5 start local windows ntp time service to jump to a specific section, refer to the table of contents on the right side and click the corresponding step step 1 configure windows time service to configure the windows time service in the file explorer, navigate to control panel\system and security\administrative tools double click services alternatively, enter services msc in the windows run dialog (windows key + r) in the services list, right click windows time and click stop the windows time service may already be stopped in this case, skip this step and proceed to the steps below step 2 update windows registry to create local ntp service to create a local ntp service launch windows run (windows key + r) enter regedit and click ok navigate to the registry key computer\hkey local machine\system\currentcontrolset\services\w32time\parameters if you don't see localntp reg dword in the list, continue with the following steps if you do see it, keep the registry editor open and proceed to the next task right click in the registry editor, select new , select dword , and enter localntp (note that this name is case sensitive) double click localntp , change the value data to 1 , select a base of hexadecimal , and click ok keep the registry editor open for the next task step 3 update windows registry to configure time provider to configure the time provider navigate to the registry key computer\hkey local machine\system\currentcontrolset\services\w32time\timeproviders select ntpserver , double click enabled , change the value data to 1 , select a base of hexadecimal , and click ok keep the registry editor open for the next task step 4 update windows registry to configure announce flags to configure the announce flags navigate to the registry key computer\hkey local machine\system\currentcontrolset\services\w32time\config double click announceflags , change the value data to 5 , select a base of hexadecimal , and click ok close the registry editor step 5 start local windows ntp time service to start the local windows ntp time service in the file explorer, navigate to control panel\system and security\administrative tools double click services in the services list, right click windows time and select properties in the windows time properties (local computer) dialog box, select a startup type of automatic , click start for service status , and click ok the local ntp time server configuration is now complete you can now synchronize the time of other computers and devices on your local network synchronize time on devices in order for devices on your local network to communicate with this new local time server, you must know the ip address of the windows ntp time server to synchronize the time on devices on the windows server that you just configured as an ntp server, go to the windows command prompt , enter ipconfig locate the ip address of the ntp server go to either the litmus edge web ui or the terminal user interface (tui) and enter the address of the local ntp server to use the litmus edge web ui, update the ntp servers see docid\ pz9d0wpbqbugyh0mh6wyx to learn more to use the tui, update the configure time setting see docid\ r1lz44wffv3h9jg33nwlp to learn more