Upgrade Win 8.1 to 10: Error 0x8007001f

[admin]

And when I check for updates, it's stuck checking forever.

I'm sorry, upgrading Windows when it is booted from a USB drive is not supported, this is a limitation of Microsoft. Our product Windows To Go Upgrader can help upgrade your Windows To Go drive, but it is not free, for more information please refer to:
http://www.easyuefi.com/windows-to-go-up...index.html