cygwin-and-x11-forwarding.md

Cygwin and X11 forwarding
=========================

**If no able to forward X11 using PuTTY to CygwinX**

```bash
[usename@login1.anselm ~]$ gnome-session &
[1] 23691
[usename@login1.anselm ~]$ PuTTY X11 proxy: unable to connect to forwarded X server: Network error: Connection refused
PuTTY X11 proxy: unable to connect to forwarded X server: Network error: Connection refused

  (gnome-session:23691): WARNING **: Cannot open display:**
```

1. Locate and modify Cygwin shortcut that uses [startxwin](http://x.cygwin.com/docs/man1/startxwin.1.html)
    locate
    C:cygwin64binXWin.exe
    change it
    to
    C:*cygwin64binXWin.exe -listen tcp*

![XWin-listen-tcp.png](../../../img/XWinlistentcp.png "XWin-listen-tcp.png")

2. Check Putty settings:
     Enable X11 forwarding

    ![](../../../img/cygwinX11forwarding.png)