Skip to content
  1. We help small teams achieve big things.
  2. Our Technical Fellow just became a Microsoft MVP!
  3. We run the Azure Weekly newsletter.
  4. We just won 2 awards.
  5. We just published Programming C# 8.0 book.
  6. We run the Power BI Weekly newsletter.
  7. Our NDC London 2020 talk is now available online!
  8. We are school STEM ambassadors.
Pascal Arnould By Pascal Arnould Software Engineer III
Windows Phone Registration Failure: Error 0x64

When trying to register a Windows Phone for the first time using the Developer Registration Tool, I got an error code 0x64 .

A quick search resulted in a lot of possible causes for this error. Solutions to fix it ranged from annoying like synchronising the date and time on the phone to painful like doing a hard reset. As it happened, my problem was a lot more trivial and boiled down to an incomplete registration process.

After creating a Dev Center account, you should receive an email containing a link to verify the account. Unless this is done, you will not be able to register your device. If you haven't received an email, go back to your account information and request another account validation email. Wait a bit, check back your account and try to register your phone again (it took me another 2 attempts before it went through successfully).

So before you start reinstalling or resetting everything, just make sure your registration is complete. It might be all you need to do!

Pascal Arnould on Twitter

Pascal Arnould

Software Engineer III

Pascal Arnould

He has over 20 years experience of of implementing complex technology solutions across a number of sectors, and is a passionate advocate of Agile practices, continuous learning and engineering excellence.

Pascal worked at endjin from 2013 - 2015.