Creating new Master Page with UI version 16 inside my Sharepoint server 2016 , does not have any effect

Question

I am starting a new sharepoint server 2016 on-premise project, and i install February 2017 CU. now i have noted that new site collections still comes with the old seatle.master & osolo.master master pages and they are set to 15 UI version, as follow:-

now i wanted to create a new custom master page for my site collections, so i follow these steps which i use to follow in SP 2013:-

1. i download a copy from seatle.master

2. rename the copy to ARQ.master.

3. Uplaod the new ARQ.master master page.

4. i defined the UI version to be 16, as follow:-

5. publish the new master page.

6. then from SP designer i try to set the new master page as defualt and as custom master page, where i got this warning message and i click ok:-

7. now i can not notice any update to the UI fro my site collection pages and interfaces, and even when i access "site settings >> master Page" i can not find the new master page :-

so can anyone advice what is the story ?? Thanks

Answer 1

SharePoint 2016 uses the UI Version 15, not 16.