"java.nio.channels.UnresolvedAddressException" while starting kafka server - windows

Question

I started zookeeper after that i have ran "kafka-server-start.bat mypath\server.properties" command to start kafka server.
Getting following error in kafka server window.
INFO Opening socket connection to server localhost/<unresolved>:2181. Will not attempt to authenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn)
WARN Session 0x0 for server localhost/<unresolved>:2181, unexpected error, closing socket connection and attempting reconnect (org.apache.zookeeper.ClientCnxn)
java.nio.channels.UnresolvedAddressException
at java.base/sun.nio.ch.Net.checkAddress(Net.java:149)
at java.base/sun.nio.ch.Net.checkAddress(Net.java:157)
at java.base/sun.nio.ch.SocketChannelImpl.checkRemote(SocketChannelImpl.java:815)
at java.base/sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:837)
at org.apache.zookeeper.ClientCnxnSocketNIO.registerAndConnect(ClientCnxnSocketNIO.java:277)
at org.apache.zookeeper.ClientCnxnSocketNIO.connect(ClientCnxnSocketNIO.java:287)
at org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1021)
at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1064)
Below are the properties in server.properties
num.network.threads=3
num.io.threads=8
socket.send.buffer.bytes=102400
socket.receive.buffer.bytes=102400
socket.request.max.bytes=104857600
log.dirs=C:\KafkaLog
num.partitions=1
num.recovery.threads.per.data.dir=1
offsets.topic.replication.factor=1
transaction.state.log.replication.factor=1
transaction.state.log.min.isr=1
log.retention.hours=168
log.segment.bytes=1073741824
log.retention.check.interval.ms=300000
zookeeper.connect=localhost:2181
zookeeper.connection.timeout.ms=6000
confluent.support.metrics.enable=true
confluent.support.customer.id=anonymous
group.initial.rebalance.delay.ms=0
Zookeeper properties are
dataDir=C:\ZookeeperLog
clientPort=2181
maxClientCnxns=0

Answer 1

We tried to check the following things in order to resolve them.
Updated the dataDir & log.dirs properties in config files (for matching windows platform)
Verified the zookeeper startup using netstat -aon | findstr '2181' command
Updated the zookeeper.connect url to 127.0.0.1:2181
Added the below Missing loopback entries in hosts file and restarted the system.
127.0.0.1 localhost