Hi
Does the Linux Machine share is in SMB1 ?
"In Windows Server 2016 starting with build 1709 and Windows Server 2019, SMBv1 is disabled by default. To enable support for the SMBv1 client protocol in newer versions of Windows Server, you need to install the separate SMB 1.0/CIFS File Sharing Support feature"
As stated, please install the SMB1 file sharing support, it's a feature, it would allow to connect to the share if it's your problem.
Thanks