vrrp problem with a windows server 2022 - linux boxes work windows dont

Dear Folks,

I have configured a vrrp with 2 Routers to share the LAN Gateway via vrrp.

Main Router:

/interface vrrp
add authentication=ah interface=ether2 name=vrrpMednet priority=200 version=2 vrid=200

/ip address
add address=172.31.31.1 interface=vrrpMednet network=172.31.31.1
add address=172.31.31.254/24 interface=ether2 network=172.31.31.0

Backup Router:

/interface vrrp
add authentication=ah interface=ether2 name=vrrpMednet priority=50 version=2 vrid=200
/ip address
add address=172.31.31.253/24 interface=ether2 network=172.31.31.0
add address=172.31.31.1 interface=vrrpMednet network=172.31.31.1

Ether 2 is connected to the same VLAN on my switches.



When i configure a LINUX or MAC Based Server / PC with gateway 172.31.31.1 it works and it can connect to the internet.

BUT:
If i configure a Windows Server 2022 Standard with GW 172.31.31.1 it only communicate with ips out of 172.31.31.0/24 but doesnt connect to internet.
When i use 172.31.31.254 or 172.31.31.253 the server can connect to internet.

I have disbaled windows firewall and also tried to open the firewall in and out for vrrp and multicast traffic but it doesnt work.

Can someone help me?

i have solved it - i hat cloudflare dns and that didnt worked … shame on me.