Hi ​@slipcue, 

I’m sorry to hear that you’re having trouble playing your music library on Sonos. 

Error 913 means the share was added or is being added using an unsupported sharing protocol, so you’ll want to add the music library share via SMBv2 or SMBv3. To resolve this error, you’ll want to remove the share you have currently for your home network, then follow the steps in our Error 913 when adding a music library share support article. The article has steps for MacOS music folders and NAS drives.

There is also a user created guide with a video in the following thread: 

 I hope this information helps!

You didn’t read the note - the music library DOES show up when I’m on my work network, but I can’t “add” it at home.  SAME laptop, SAME music library folder, SAME Sonos Controller.

Hi ​@slipcue,

I understand that it’s the same laptop and music folder, however error 913 is specifically for because Sonos is “Unable to add Music Library due to unsupported connection type”, I haven’t seen it link to anything other than that. Since it’s a different network and Sonos system, then there could be a network or router setting that is preventing the connection from finalizing, even if you’re using SMBv2/SMBv3.

Without a deeper look, I can’t say what the issue would be, so I’d recommend submitting a diagnostic after the error message occurs then contacting our support team. They have the necessary tools available to look into your system and see why this error is occurring and can help troubleshoot this with you.