Hi,
I try to create the SMB share folder named Upload in my local server, and it works fine with me. In my opinion, you may check if you are running the server as the administrator, or you may try alternative way except going through console to make it happen.
Since you mentioned the folder named Upload does not exist, you could try to create a folder named Upload in C:\ Shares > click Properties > click Sharing > OK > choose Everyone > Add > click Share, it is done.
Best Regards,
Mulder Zhang
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