Home » Fixed – Unknown rectangle encoding 1835861421

As a keen believer in laziness I have recently started to use Veency and Chicken of the VNC to control my iPhone from a distance.  However, as both pieces of software are new additions in my arsenal I was stumped when I kept getting an error message when moving around the screen.

Unknown rectangle encoding 1835861421

Completely stumped by the error I decided to give RealVNC a go, which threw up a slightly different error message, which immediately pointed out that ZRLE encoding was at fault.  Now I’ve been using VNC for as long as I’ve been working in IT Support, so I am a big fan, however I was still determined to fix Chicken of the VNC for my own piece of mind.

So – if you are having the same problem and you’d like to fix it:

  1. Open Chicken of the VNC
  2. Click on ‘Connection’
  3. Click on ‘Connection Profiles’
  4. Untick all Ecoding’s besides ‘Raw’
  5. Close the profiles window down and reconnect.

That’s it…It really is as simple as that!  If you have an alternative solution why not let me know using the comments section below.

Home » Fixed – Unknown rectangle encoding 1835861421


  • Yourmindonpot

    doesnt work for me.

    • http://www.mikesel.info/ Mike Hudson

      What version of iOS are you using? An what version of VNC? Are you using RealVNV or Chicken?

    • http://www.mikesel.info/ Mike Hudson

      What version of iOS are you using? Also which version of VNC on the device and your PC? Have you tried switching off the mouse pointer?

  • Dillan

    Thanks for the help, but it did not work. Upon following your actions, I received the error message “Unknown rectangle encoding 7929856 -> exiting” I am jailbroken; could any of my other packages be interferring? Any suggestions would be appreciated!

    • http://www.mikesel.info Mike Hudson

      I’ve not jailbroken my device for sometime now, so I’ve nothing to test this on. But if you could maybe give some indication of what packages you are using, perhaps we can work it out.


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