[MrBuyakah]

Edit: Doing some reading, I'm thinking it might be because I don't have a username or password set to log in to the windows machine. An additional step is to create an additional local account on the windows machine (with username & password 'kodi'), and then under the main windows account, share the folders with the local 'kodi' account. Then.. on the LibreElec machine, add the network location and use 'kodi' for the username and password. I'll report back once I try this. 

This works as it's exactly what I am doing due to Windows only supporting SMBv2 and up.  I went a little further and only allowed that "kodi" user read only access to my shares.