Get a error message:"Failed to bind socket: Unknown error"

[breezecloud]

I downloaded the Windows version of the execution file mpd.exe on the official website and found an error when running: at this time, "server socket: bind to ’0.0.0.0:6600’failed(continuing anyway,because binding to ’[::]:6600’succeeded): Failed to bind socket: Unknown error"
I use "netstat -ano | findstr :6600" to display normal port listening, but use the client link will display timeout. The same windows environment, running mpd does not occur errors, using the same client can also normal link, may I ask why? Can help me?thanks.