Hi,
Please find more information about Cumulative Update for Microsoft Dynamics NAV released in September 2017 below.
Here you can find the download links.
Cumulative Update 10 for Microsoft Dynamics NAV 2017 has been released (Build 18197)
Cumulative Update 23 for Microsoft Dynamics NAV 2016 has been released (Build 49146)
Cumulative Update 35 for Microsoft Dynamics NAV 2015 has been released (Build 49144)
Cumulative Update 47 for Microsoft Dynamics NAV 2013 R2 has been released (Build 49153)
Cumulative Update 54 for Microsoft Dynamics NAV 2013 has been released (Build 49147)