Is there any way I can authenticate on GitHub from my Windows 10 VM so that I can push the changes?
Right now the Edge is just sits there with the disabled button "Authenticate".
I know in Linux I can set the user id in some configuration file, but it looks like its not happening on Windows.
Is there any other way?
You should see a Sign In button when visiting https://github.com/login: that would allow you to authenticate on the remote side.
From your VM, using the latest Git for Windows, you will also authenticate when pushing for the first time to a GitHub repository: the credential helper will use the Windows credential manager to cache your GitHub credentials.
