That doesn’t make any sense, assume you’re talking about using the Public folder share and accessing as Guest ie no authentication, so entering the Sonos username and password is essentially just filling the mandatory fields with false info, which when passed to the NAS is then logging in as Guest/Public user with no authentication?
My Music is within a share which is password protected, so I need to pass over the correct username and password for the share on the NAS otherwise it will get access denied.
I have tried your suggestion of using Sonos username and password, but as my share is password protected on the NAS, ie not Public, it gets access denied.
I have the share setup with authentication and have SMB set to 1, 2, 3. I have entered the correct username and password and still get access denied.
There is clearly an issue with SMB on the new OS 5, as on this forum there are already lots of other users posting about SMB issues that weren’t present prior to OS 5. Sonos worked perfectly, same share, same username and password on OS 3, doesn’t work on OS 5.
Please try adding a share to Sonos which requires authentication to recreate this issue.