I’ve recently looked into seeing what I can do about my relatively new Crucial drive and updating the firmware. There’s an app for Windows machines but, nothing for us Mac users. I’ll have to call Support when I have an extra two or three hours more to spend on this. Frustrating is a mild term at this point. Since I don’t have a “server” so-to-speak, I don’t know if futzing with that will do any good. I’ve enabled about every sharing protocol that I could find so, it’s probably something small that I’m missing. Bottom line: It sure would be nice if Sonos would release an app that could get us hapless saps back to where we were in May. Oh well.

I updated to the latest iOS iPhone app as well as updated the speakers with the latest firmware. I still couldn’t add the Sonos music library; I got “Access Denied, check user name and password.” This is the same error every time. So, I called Crucial tech support since my music resides on their X8 SSD drive. They confirmed that the SMB protocol is dictated by the iMac. I have the latest OS on that iMac so I seriously doubt it’s an SMBV1 issue. My new issue since updating the Firmware is that my S2 controller on the iMac will not open without either updating it or resetting it. Last time I did that, I had to reinstall the old S2 app just to be able to see and manage my music on the desktop.

I have an older Seagate drive that used to connect to my Sonos ecosystem but no longer does.  No matter what I do (phone app, windows app), I get “Sonos was unable to add music folder ...(913)”.  With password, without password, same result.  I can see the folder on the network with the File Explorer, and as far as I can tell, there’s a DLNA server running there.  I’ve tried no user/password and user/password both with and without qualifying the user by group.  I wasted over an hour on the phone yesterday with Sonos support.  I think my next step may be to buy a new drive, but that’s a hassle I’d rather not do if I don’t have to.

Not sure if your drive counts as a NAS or if it's connected to a PC, but did you follow the set up mentioned here? https://support.sonos.com/en-us/article/add-your-music-library-to-sonos

Jz… I have a relatively new Crucial 1TB drive for my main Sonos library that’s connected to my wife’s two year old iMac running the latest OS. I called Crucial asking if there was some way to check the SMB version contained on the drive. Just like others that have posted in different threads, they said that - on a MAC - that function is inherent in the operating system and not the drive.  Those with Windows machines can indeed check and adjust SMB versions.

I still don’t have access to my Crucial music library via the iPhone app and it’s ridiculous. I finally updated the Firmware on my speakers and, as a result, my desktop controllers (S2) would not open. I was presented with an option to update the app or reset it. Resetting would not work. So, on my office system, I deleted and reinstalled my old S2 controller (I retained the previous .dmg file) and all things work up here. (I run an older operating system in my office that Sonos no longer supports.)  But, I’ve yet to update the S2 controller on the new iMac to control the main music library.  Why?  I’m beyond paranoid at this point to keep futzing with it and lose control of my ability to use Sonophone. That works perfectly but, isn’t as full featured as the iOS Sonos app.

My next step will be to take the old S2 dmg file to my wife’s iMac, update the controller as per the prompt when opening the Sonos desktop controller and see happens. If all goes to hell in a handbasket - again - I’ll delete the update and reinstall the old S2 app.

Frustrating doesn’t some close to what I feel. Oh, and the video that’s being suggested for Mac users to add their libraries back in… they use back slashes and not forward slashes. My libraries network path all used - and still use - forward slashes and the Sonophone add finds my libraries without a hitch. Are back slashes Windows related?  If someone knows, please chime in. Sonos: Feel free to create an app that, when installed, fixes all of this crap automatically. Remember how things used to work?

I just replied to jz above. My question to you is: Did you use “ // “ or “ \\ “ when setting up your network paths for your libraries.  I’ve seen it posted both ways but…. mine has worked perfectly for years using “//“ prior to the May update and, Sonophone has no issues with “//“.  Thanks

I've tried backslash and forward slash.

The drive is and always has been a NAS.

I, like slamdesi, am beyond frustrated.  I do need to update the NAS anyway, but that's a whole new line of frustration.

Early on I tried putting a music folder onto the iMac’s internal drive but, learned shortly thereafter that ALL hard drives are considered NAS drives.  It appears that anyone NOT streaming are the ones most effected since May.  Speaking of worthless, has anyone ever tried the “Web App.”  I did (again) not too long ago and it’s totally worthless - at least in my experiences with it. I’d like to know if ANYONE uses that thing.