A known issue with the 2902x642840 revision is that it struggles with dynamic sample rate switching when Exclusive Mode is active.
Behringer’s drivers for the UMC series (versions 4.38.0 through 5.1.0) were written for Windows 7/8.1’s less restrictive audio stack. When you run them on Windows 10 with “Allow applications to take exclusive control” checked, the driver misinterprets the new kernel calls. The result? The error: behringer2902x642840 windows 10 exclusive
Download the driver from a reliable archive such as JamKazam or DriverScape . A known issue with the 2902x642840 revision is
(If you have a UMC1820, use PID_0010. For UMC204HD, use PID_000D. For UMC404HD, use PID_000C.) use PID_0010. For UMC204HD
...the Behringer lights up. One green ring. No sound.