Windows 10: Error code 42 in Your Phone app

Hello,


I am using a galaxy S10e with the Your Phone app in Windows 10 version 1909. All the functions of the app work except for the screen mirroring, which unlocks the phone screen but after that always returns error code 42. Can you help troubleshoot this? Thanks.

:)

 

Your Phone app not working

Perhaps this may be of help clearing up some confusion.

If you do a search for "Your Phone" via the Windows 10 start menu, the result takes you to the "Your Phone" app page, which gives you the options to connect/sync your computer to your phone. It is the settings on that page that I have struggled with, because they lead you nowhere, with no way to complete the process. At least, that is my experience.

But there is another choice in that also shows up farther down in the start menu "Your Phone" the search results called "Link your phone". It takes you to a different settings page titled "Your Phone", but gives you options not found on the Your Phone "app" page, including the ability to add a device, and most importantly, "unlink" your phone. This is the crucial step, which will lead you to the next step of re-linking your phone on your computer. You will come across a popup that displays a QR code (you will be asked to scan this QR code in a further step), and you will be asked to install the the Your Phone app on your phone (even if it is already installed), upon which it will then offer you to confirm the process by either scanning the QR code, or signing into Microsoft.

For me, for whatever reason, scanning the QR code did not work, but signing into Microsoft did complete the process.

 

Supported phones for Windows 10 Mobile Insider Preview


Your list confirms my phone is eligible, Lumia 521. The windows Insider App fails after ~ 15 seconds, restores data and gives me error 80073cf9. I trouble shot this and went thru all the steps mentioned on several websites including MS without any luck. Short of a hard reset, this is where I am now. Suggestions appreciated.

 

Supported phones for Windows 10 Mobile Insider Preview

When my phone fails to upgrade I just keep trying. One upgrade took 3 or 4 tries.