Problem with Task Scheduler

[gadsad]

Hello

I Installed last release on FFS 10.6 on a Windows 2016 Hyper-V VM
VM with Windows 2016 Server as AD domain member
Logged as domain administrator
Need to replicate a file folder (mirror) to a Synology NAS
FFS Works fine manually

I scheduled a task (Taskschd.msc) which works fine when launched manually from Windows task scheduler interface (right click on the task + run)

Problem: when I change the task parameters to "run even is user is not connected" task do not run anymore

I need this parameter so I can close my Windows session and task will keep running

Any idea?
Thank you

[Plerry]

Define the proper user credentials for running the scheduled task.
The default "System" user does not work, as it has no stored credentials
or drive mappings defined for your NAS network location.

[gadsad]

I am running the scheduled task as a user called nasuser and same user and same password created on NAS.
Could you explain better your recommendation? Not clear for me
Tank you