Check that a LAN cable connected to the network is connected to the LAN port of this machine. For details on the cable connection port, refer to Here.
Check that an IP address is assigned to this machine. Tap [Utility] - [Device Information], and check that an IP address is displayed.
If no IP address is displayed, you need to configure the network. For details, refer to Here.
Enable the SMB Send function. (You can use this function with the default settings unless otherwise requested.)
How to configure the setting is explained using Web Connection. For details, refer to Here.
In Mac OS, configure the following setting.
Set [SMB Authentication Setting] to [NTLM v1/v2]. For details, refer to Here.
Enable the direct hosting SMB service. (You can use this function with the default settings unless otherwise requested.) For details, refer to Here.
Synchronize the date and time, including the time zone, between the machine and your computer. For details on how to set the date and time of this machine, refer to Here.