Cumulative Update 5 includes all application and platform hotfixes and regulatory features that have been released for Microsoft Dynamics NAV 2015.
The cumulative update includes hotfixes that apply to all countries and hotfixes specific to the following local versions:
- AU - Australia
- AT - Austria
- BE - Belgium
- CH – Switzerland
- CZ – Czech Republic
- DE - Germany
- DK - Denmark
- ES - Spain
- FI - Finland
- FR - France
- IS - Iceland
- IT - Italy
- NA - North America
- NL - Netherlands
- NO - Norway
- NZ - New Zealand
- RU – Russia
- SE - Sweden
- UK - United Kingdom
Note: You must convert the database if you are upgrading to Cumulative Update 5 from a cumulative update earlier than Cumulative Update 4 (build 39663). For more information, see Converting a Database in Help for Microsoft Dynamics NAV.
You can download the cumulative update from KB 3039824 – Cumulative Update 5 for Microsoft Dynamics NAV 2015 (Build 40262). 
