USB device CDC-ACM class is not stable when we use host machine as windows or mac,

[MaheshAvula-Alifsemi]

Hi @xiaocq2001,

I am working on USB device CDC-ACM class and running stress, when we connect my USB device to Linux host machine stress test was passing but when we connect USB device to Windows host machine stress test was failing after running some time.
stress test includes testing host machine sending 512 bytes of data to the device and device sending back to the host.
from the USB trace I can see SET LINE CODING request is not succeeded.

Do we need to do handle any other requests which sent from Window machine?, could you please give anyinputs on this.
Here I am attaching USB data trace .
B3_data_trace.zip

Thanks
Mahesh

[MaheshAvula-Alifsemi]

Hi @xiaocq2001,

I really appriciate your help on above issue.