MacOS Sonoma might be using newer SMB versions that are incompatible with Windows 2003 (which supports SMBv1).
In win10 Press Windows key + R
, type optionalfeatures.exe
, and hit Enter. Scroll down to “SMB 1.0/CIFS File Sharing Support” and make sure the client option is enabled. https://answers.microsoft.com/en-us/windows/forum/all/win-10-cant-browse-folder-share-from-win-2003/f43d6ee9-12e8-4317-b1b2-b6ae1cfb54a6
2003 is an outdated system, and it’s recommended to migrate to a more modern server version if possible.
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