TechInfoDepot:Microsoft Windows/Windows 8.1 Update error code 80244019

Alright, I had this exact same issue and I found a solution that worked:

• Go into Change PC Settings (from the little Windows 8 side-bar thing you get from putting your mouse in the top-right corner; I don't know what it's called).
• Update and Recovery
• Choose how updates get installed
• UNCHECK the option to get updates for other Microsoft products

Now run Windows Update again and with any luck, it should work! For me, it downloaded a few tiny updates, then I had to reboot, then running wuauclt.exe /updatenow has triggered it to start downloading Windows 10.

Good luck, hope the fix works for you too!