GPO Windows 10 Start Layout not working

Hello

I am having the following issue when trying to use a GPO to change the default start layout of all my domain users.

I use Windows 10 Enterprise PC's and a Windows server 2012 R2.

Steps I did:

1. Use a Windows 10 Enterprise PC. 
2. Logged on as a domain user with admin rights
3. Start customizing the start menu by dragging and removing tiles until I have the desired layout
4. Start windows powershell (as administrator)
5. Use the following command: Export-StartLayout -Path "C:\MyStartLayout.xml"
6. Go to the C-drive
7. Copied the created xml
8. Went to a share I made on my domain controller \\DC\MyShare
9. Pasted MyStartLayout.xml in the share (btw the share is accessible for the domain users)
10. Opened group policy management on my server
11. Went to: User Configuration/Policies/Administrative Templates/Start Menu and Taskbar/Start Layout
12. Enabled this policy and in the textbox put the share path: \\DC\MyShare\MyStartLayout.xml
13. the GPO applies to the folder where my useraccount is.
14. When I logon to a pc with the user on which the gpo must apply, he doesn't get my custom start menu.

I have tried many things, but nothing seems to work. Other GPO's apply perfectly. Only this start menu layout thing is driving me crazy, because I don't want useless apps in my tile menu. Users can access the share and the xml looks solid.

It all seems simple, and a lot of people on google are calling it a breeze, but somehow it just doesn't work for me. Maybe Permissions? Firewall? Other GPO's that are enabled, that block this one?

Any ideas?

Kind regards,

Bob