OpenVPN does not pass all traffic through itself?

Question

openvpn

When setting the "redirect-gateway def1" parameter, the Internet does not work on the client. Server on Windows Server 2016, can anyone come across? Help!
UPD1: Server config

port xxxx
proto udp
dev tun
dev-node "VPN Server"
dh "C:\\Program Files\\OpenVPN\\ssl\\dh2048.pem"
ca "C:\\Program Files\\OpenVPN\\ssl\\ca .crt"
cert "C:\\Program Files\\OpenVPN\\ssl\\cert.crt"
key "C:\\Program Files\\OpenVPN\\ssl\\cert.key"
server 172.16.10.0 255.255.255.0
ifconfig 172.16.10.1 255.255.255.0
max-clients 32
keepalive 10 120
client-to-client
comp-lzo
persist-key
persist-tun
cipher AES-256-CBC
status "C:\\Program Files\\OpenVPN\\log\\ status.log"
log "C:\\Program Files\\OpenVPN\\log\\openvpn.log"
verb 4
mute 20
duplicate-cn