Depends on the user's AV-program and firewall I suppose.
E.g. I have not experienced such problem any time recently. (Did you?)
Also I have
not excluded BS.Player from Norton since quite some time (f.y.i. I'm using Norton (360PE) at present).
Anyhow, it appears that (at least) AVG still (or again?) causes this.
And
DragonFighter has shown the work-around for AVG users.