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nuno silva's avatar
nuno silva
MVP
Aug 17, 2018

Announcing Windows 10 Insider Preview Build 17741

"Hello Windows Insiders!   Today, we are releasing Windows 10 Insider Preview Build 17741 (RS5) to Windows Insiders in the Fast ring."   More info: https://blogs.windows.com/windowsexperience...
Marcos Jesus's avatar
Marcos Jesus
Icon for Microsoft rankMicrosoft
Aug 22, 2018

The following issues occur when connected through Wi-Fi:
- Modern apps can't connect to the Internet after this update. Win32/x64 apps connect normally.
- Signing in to Office 365 on Excel/Word using corporate account (O365/AAD credentials) fails with error code 0xCAA70004
These issues don't occur when connected through Ethernet.

  • Marcos Jesus's avatar
    Marcos Jesus
    Icon for Microsoft rankMicrosoft
    Aug 22, 2018

    Just tested against Build 17744... Same issues occurred in this new build.

    • Marcos Jesus's avatar
      Marcos Jesus
      Icon for Microsoft rankMicrosoft
      Aug 22, 2018

      I just figured out the reason of my issue. In my case, IPv6 was disabled in my WiFi connection which did not work, but it was enabled in my Ethernet connection that was working. Enabling IPv6 in my WiFi connection solved my problem. Regarding root cause, I don't remember if IPv6 was enabled on my WiFi connection before the update, so either it was accidentally disabled during the update or, if wasn't the case, UWP and Office apps now requires IPv6 for Internet connectivity.