I am trying to develop for Windows Phone 8.1. I do not own a Windows phone myself so I am using someone else's phone. When I try and register the phone for developer stuff (using the Phone Registration Tool) I get error code 0x64. The times are correct, I have tried with and without auto time on.
- I am running visual studio 2015
- I am running Windows phone 8.1 (lastest update)
- I have a developer account
- The phone is has a different Microsoft account to the dev account
What can I do to try and fix this?