Why have I have lost access to my music library on both Sonos S1 and S2 products?

I have had the same issue.  Anxious to regain access to my Music Library on my Mac.

I have come to realise it’s not just me or something I’ve inadvertantly done - more the result of a deliberate decision on the part of Sonos, coupled with their staggeringly poor recent App update. 
 

I just do not understand the thinking behind either…

Hope they fix it soon or all 10 pieces of it will be on eBay..

I hear that, and have been considering what to do as well. What a shame…

I have to believe they're going to fix it.  I called support three times yesterday, morning, afternoon and evening.  First was a 60 minute wait, second was 65 third was 80.  

You are not alone. I lost my music library last night. To try to get it back, I updated my Sonos ios app and spent a chunk of this morning discovering the “updated” app doesn’t manage your music library. Sonos says it eventually will but you have to use the desktop app to do that for now. I went to my desktop, had to update the Sonos Controller, tried adding my NAS to the music library and am getting the same path “is no longer available” error that you are despite the fact that my NAS is powered on and accessible. I wish I had an answer for you. I will add that I thought this might be an SMB issue, having recently received a notification from Sonos that SMB1 would cease to be supported for NAS access in the future. I tried changing my NAS settings to use SMB2 exclusively in the hopes this might help. Unfortunately, no luck. I do hope Sonos does something about this soon as it is really annoying.

“Listening to music” feature will be restored in a future update.

Until then we kindly ask you to instead listen to the deafening silence from SONOS regarding this debacle.

If you search online for SMBv1 or http library shares and their vulnerabilities, you will likely see why it’s not being supported in the new Sonos App. Microsoft haven’t included it Windows 11 too - it’s considered to be a security risk and so these things do help to encourage users to step-up to SMBv2.

Heres one link regarding SMBv1 security risks…

https://www.tripwire.com/state-of-security/smb-protocol-explained-understanding-its-security-risks-and-best-practices

I don’t personally know MAC OS very well, but I assume it’s a simple settings change to setup an SMBv2 shared drive. The instructions are probably online somewhere to make the changes required, or perhaps check YouTube. 

The guide for Windows PC’s are available posted HERE…but I’ve not seen a similar post for Mac computers at the moment.

NAS box shares are usually quickly configured by a drop-down selection of SMBv2/v3 in their configuration settings.

I have spent hundreds of pounds to have Sonos speakers all around the house, purely to play music from the large library on my Windows Desktop (all ripped from CD’s that I bought).  This has disappeared completely from the Sonos App, making my investment a complete waste.  Any lawyers out there? Surely the basis for a massive Class Action suit! 

I was such a fan of Sonos, it worked beautifully (ok, a few glitches) & I used to recommend to everyone. 

Why on earth would they do this?

Well it’s probably not the case if you follow the instructions posted by the user @press250 in this link…

https://en.community.sonos.com/controllers-and-music-services-229131/adding-a-windows-smb-share-step-by-step-6892060