You have an unconventional smb.conf for sure - winbind references , You set it up to be a WINS server, SHARE level security instead of the default USER, and the path is in the [global] section for some reason:
Anywho, What's the permissions of the target folder:winbind trusted domains only = Yes
idmap config * : backend = tdb
path = /media/MediaShare
read only = No
Code:ls -dl /media/MediaShare
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