We were unable to access to a sub-folder in a windows shared folder from one of the windows machines that are in different domains.
We still we can access to the windows shared folder but not navigating to the different folders in there.
The solution to this issue was to delete or cancel all the connections to that shared resource using command line in a windows command prompt:
net use \\remote-server\remote-folder /DEL
And repeat the same command for the other connections in that same resource. You can find them running net use
When done with this task open the connection using the new credentials:
net use \\remote-server\remote-folder [PASSWORD] /USER:[DOMAIN\USERNAME]
And that should be it!
Good luck!