Microsoft delivers Windows 10 Mobile build 10.0.14390 for insiders. This build is most probably Windows 10 Anniversary Update RTM build. The company also released build 14390.0 for PCs. Currently, insider builds are rolling out for Fast Ring insider members. So if you are in Slow Ring you have to wait.

Known issues in Mobile Build 10.0.14390:

  • Voice Recorder does not show up consistently as an option for Call Recording. We heard your feedback and plan to release a Voice Recorder app update via the Store soon that has the fix for this issue.
  • Wallet users are prompted for a PIN twice when using tap to pay from a locked phone. You can enter their PIN twice and tap as usual once the phone is unlocked. A fix for this will come as a Wallet app update via the Store.
  • REMINDER: We have changed the backup format for Windows 10 Mobile devices to reduce the size of the backup stored in OneDrive. As a result, if you do a backup on a device running the latest Windows 10 Mobile Insider Preview builds and move back to the released version of Windows 10 Mobile (Build 10586) and restore from your backup – your Start screen layout won’t restore and remain the default Start layout. Your previous backup also gets overwritten. If you need to go back to Build 10586 temporarily, once you are on Build 10586 you should disable backup so it doesn’t overwrite the good backup from Windows 10 Mobile Insider Preview builds.

Windows Anniversary Update is coming to August 2, which is free for Windows 10 users. Microsoft Windows 10 free upgrade offer is also ending on July 29. If you are still on Windows 7/8/8.1, you have few days left to upgrade your PC to Windows 10. The company also released July update for Windows 10 Mobile build 10.0.10586.494.

Check out what’s new in Windows 10 insider build 14390.0 for PC
Check out What’s new in July update Windows 10 build 10586.494


  1. i have a 14390 build update version, I am using lumia 830 nokia, it has a slow charging problem is there any solution for this pls suggest

    • For last few builds slow charging and low battery life issue appeared for many insiders. Microsoft knows about this issue and insider team is working on it. Hopefully, we get better build next time.


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