I do find many instructions and even questions here which are out of date or the answers not helping me. Therefor

Setup

1. on ArchLinux box: /etc/ssh/sshd_config:

 X11Forwarding yes X11UseLocalhost no

2. on client putty:

3. on client xlaunch:

The first time this starts I allow the Windows Firewall rule to be added.

After connecting to the ArchLinux box and attempting to start xeyes I get:

Error: Can't open display:

On the Archlinux box:

 echo $DISPLAY

Gives an empty line.

Variations tried

In 2) setting localhost:0 or 127.0.0.1:0.0 Setting DISPLAY in the Archlinux Box any of the following

1. export DISPLAY=0.0
2. export DISPLAY=localhost:0.0
3. export DISPLAY=127.0.0.1:0.0

will just display Can't open the display with respective setting as display: when starting xeyes.

Which step am I missing?

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