Deployed open stack Rocky with hyper V. We are using OVS and flat network. Nova and neutron agents are up but Instance creation is failing with below error.

Error: Failed to perform requested operation on instance "win", the instance has an error status: Please try again later [Error: Exceeded maximum number of retries. Exhausted all hosts available for retrying build failures for instance 8d262f0e-a851-4cd1-84c5-422e9d532fc2.].

neutron-dhcp-agent.log

2019-11-21 17:28:25.226 5959 INFO neutron.agent.dhcp.agent [-] Trigger reload_allocations for port admin_state_up=True, allowed_address_pairs=[], binding:host_id=COMPUTE, binding:profile=, binding:vif_details=, binding:vif_type=binding_failed, binding:vnic_type=normal, created_at=2019-11-21T11:58:19Z, description=, device_id=8d262f0e-a851-4cd1-84c5-422e9d532fc2, device_owner=compute:nova, extra_dhcp_opts=[], fixed_ips=[{u'subnet_id': u'0df91235-cf72-40ef-a083-b46c5e218b77', u'ip_address': u'IP'}], id=c61f7a4a-1bb2-42f4-935f-8c3ae3f41c4a, mac_address=fa:16:3e:0d:44:aa, name=, network_id=911f6654-82b9-4a9f-9b38-6eed9af05bb0, port_security_enabled=True, project_id=216c81f417014f44b38276cc2e5c1189, revision_number=3, security_groups=[u'793e1067-07d9-4882-850a-fe6cd4b2893a'], **status=DOWN**, tags=[], tenant_id=216c81f417014f44b38276cc2e5c1189, updated_at=2019-11-21T11:58:24Z

neutron-ovs-agent.log

2019-11-21 17:45:37.960 7736 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor unix:C:\ProgramData\openvswitch\db.sock Bridge name --format=json]: None
2019-11-21 17:46:08.101 7736 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor unix:C:\ProgramData\openvswitch\db.sock Bridge name --format=json]: 2019-11-21T12:16:08Z|00001|util|EMER|failed to connect or listen to "unix:C:\ProgramData\openvswitch\db.sock" (Unknown error)
2019-11-21 17:46:08.101 7736 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor unix:C:\ProgramData\openvswitch\db.sock Bridge name --format=json]: None
2019-11-21 17:46:38.241 7736 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor unix:C:\ProgramData\openvswitch\db.sock Bridge name --format=json]: 2019-11-21T12:16:38Z|00001|util|EMER|failed to connect or listen to "unix:C:\ProgramData\openvswitch\db.sock" (Unknown error)
2019-11-21 17:46:38.241 7736 ERROR neutron.agent.linux.async_process [-] Error received from [ovsdb-client monitor unix:C:\ProgramData\openvswitch\db.sock Bridge name --format=json]: None

neutronovsagent.conf

[DEFAULT]
control_exchange=neutron
transport_url=rabbit://user:password@controller
log_dir=D:\OpenStack\Log\
log_file=neutron-ovs-agent.log

[AGENT]
enable_metrics_collection=false
tunnel_types=vxlan

[SECURITYGROUP]
firewall_driver=openvswitch
enable_security_group=true

[ovs]
local_ip=IP
integration_bridge=br-int
tenant_network_type=vxlan
ovsdb_connection=unix:C:\ProgramData\openvswitch\db.sock
enable_tunneling=true
tunnel_bridge=br-tun

OVS Details

PS C:\Users\Administrator> ovs-vsctl.exe show
e68a7179-3667-4c20-9eed-7ce879501ca8
    Bridge br-tun
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port patch-int
            Interface patch-int
                type: patch
                options: {peer=patch-tun}
        Port br-tun
            Interface br-tun
                type: internal
        Port "vxlan-0a962333"
            Interface "vxlan-0a962333"
                type: vxlan
                options: {df_default="true", in_key=flow, local_ip="10.150.35.29", out_key=flow, remote_ip="10.150.35.51"}
    Bridge br-data
        Port br-data
            Interface br-data
                type: internal
        Port "SIOM Port 1"
            Interface "SIOM Port 1"
    Bridge br-int
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure
        Port br-int
            Interface br-int
                type: internal
        Port patch-tun
            Interface patch-tun
                type: patch
                options: {peer=patch-int}

Controller

# ovs-vsctl show
44425bcb-cf92-4a6b-84e8-4be1a9ac3fe5
    Manager "ptcp:6640:127.0.0.1"
        is_connected: true
    Bridge br-provider
        Controller "tcp:127.0.0.1:6633"
            is_connected: true
        fail_mode: secure ...