Connection Error! Message: 0x89731813

Sep 22, 2011 at 6:09 PM

I have Mozart with official Mango 7720, and i have these error. It is possible working on official Mango?


Sep 22, 2011 at 11:00 PM

Hey posztos,

I'm running on 7720 and have not seen this issue. Is your phone developer unlocked and syncing with Zune? I've seen reports that this may be due to the screen locking, though I can't repro this on my device, is that what you're seeing?

- Oren

Sep 23, 2011 at 5:06 AM

I don't have any unlock, how i made the developer unlock?

Sep 23, 2011 at 6:59 AM

You need to visit and sign up for a developer account ($99, free if you're a student). Then once you get that you use the registration tool that comes with the SDK to register your phone, which unlocks it for sideloading, which is what this tool relies on.


- Oren

Oct 15, 2011 at 8:38 AM

For clarification:

  1. It works for the Emulator (Build 7600 or later)
  2. I like to use it on a real device that device has to be "developer unlocked" (and so I need a developer account for $99)?


Real Device (HTC Mozart):

Emulator: (Visual Studio 2010 Express for Phone)

OK, just need to do an update of my WP7 development environment (did a last update month ago - just using Visual Studio 2010 Express for Phone ;-))

Kind Regards,
Harald-René Flasch (aka hfrmobile)

Oct 15, 2011 at 5:41 PM

Yup, you're if your emulator version was / is 7003 then you are on the WP7 tools and not on the Mango tools. Upgrading to the Mango tools will solve this for you :)