MacOS update, Tahoe 26.3.1 (a) (25D771280a)
The latest MacOS update, Tahoe 26.3.1 (a) (25D771280a), broke Sonos Controller v17.2 b90067171 on my iMac M3
iMac 24″, macOS 26.3
Assuming simple fixes like a restart don't correct the issue, reach out to Sonos about their app.
Also, FYI while you cannot roll back a macOS version update (at least, not easily), you can roll back the (a) Background Security Improvement. Go to System Settings > Privacy & Security > Background Security Improvements (near the bottom), then click the (i) on the right side next to the macOS 26.3.1 (a), then select Remove and Restart.
