Failed to ssh localhost

[ghost]

I have tried some ways from @issues2729, but still failed to ssh localhost.

xiligey@DESKTOP-9NNPCP8:~$ sudo /usr/sbin/sshd -d -p 2222
[sudo] password for xiligey:
debug1: sshd version OpenSSH_7.2, OpenSSL 1.0.2g  1 Mar 2016
debug1: private host key #0: ssh-rsa SHA256:31rf3rSuM67fNm2WneaMzIyJq4JttT2mDk7B+UvCtmA
debug1: private host key #1: ssh-dss SHA256:PJGq7XlOESo1SRfi6adWXPlketkhvcsC1vR/epk141g
debug1: private host key #2: ecdsa-sha2-nistp256 SHA256:3KSlicDZcCsHygwnsjDvkLcUPQQnrAF5S6nuFZgVshw
debug1: private host key #3: ssh-ed25519 SHA256:ZGScLJXFJImZdAnTQeRyhZDJ0JHy/DLLSNQzznxnwT8
Missing privilege separation directory: /var/run/sshd

I tried to shut down the windows internal ssh server in services.msc. But it can't help.

[ghost]

I finally fixed it with two steps!

1. I add this into file /etc/hosts.allow:
   ssh:ALL:allow
   sshd:ALL:allow

2. remove openssh-server, then install it again.

sudo apt-get remove openssh-client openssh-server
sudo apt-get install openssh-client openssh-server

[feinstein]

Doesn't work and now can't even reinstall SSH.

remove works, but install gives me:

sudo apt-get install openssh-client openssh-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
openssh-sftp-server ssh-import-id
Suggested packages:
keychain libpam-ssh monkeysphere ssh-askpass molly-guard rssh
E: Could not read response to hello message from hook [ ! -f /usr/bin/snap ] || /usr/bin/snap advise-snap --from-apt 2>/dev/null || true: Success
E: Could not read response to hello message from hook [ ! -f /usr/bin/snap ] || /usr/bin/snap advise-snap --from-apt 2>/dev/null || true: Success

[mysaggar]

I tried the same steps as specified.
I tried changing the /etc/hosts.allow file, /etc/ssh/sshd_config file for changing the port, but still, I am unable to ssh to localhost.
Below are the contents of my /etc/hosts.allow file:

Below are the contents of my /etc/ssh/sshd_config file

Port 2222
PermitRootLogin no
AllowUsers hduser
UsePrivilegeSeparation no
ChallengeResponseAuthentication no

UsePAM yes
X11Forwarding yes

PrintMotd no

# Allow client to pass locale environment variables
AcceptEnv LANG LC_*

Subsystem       sftp    /usr/lib/openssh/sftp-server

and here is the ss of my error

[zenloo]

I tried everything, but it still doesn't work.Always Connection refused.

[iptoux]

Just create Directory "/var/run/sshd" or "/run/sshd" on sshd server, then it's working.