Btest.exe Problems

Btest.exe can not run send mode with udp, how to fixe it?

[root@MikroTik] /tool bandwidth-server
enabled: yes
authenticate: no
allocate-udp-ports-from: 2000
max-sessions: 100

Udp can running receive mode only, max is 950Mbps
Tcp both are running correctly but RX Max is 350Mbps and TX is 100Mbps limited

Perhaps some firewall on the way is blocking it, because udp packets from btest are not seen by stateful firewall as established or related, they look like random unsolicited packets. At least that’s the problem I have with udp btest all the time.

I have backed up the config and reset to default, then restore the previous config.
Finally the probelm has gone.
no any firewall rules changed.
Dunno What happened.

I’ve found that problem is windows firewall block the udp incoming.
It’s my fault.