Hello,
I've discovered bug in git. I'm used to add files by copying absolute path from my IDE. Now on Windows 10 I discovered bug. Git says: "is outside repository" when I use "git add C:\repo\file.txt". For "git add c:\repo\file.txt" (drive letter is lower-case) it works like it worked before on previous windows. I think it's bug because windows file paths are case insensitive and both of them should work. My git version is "git version 2.8.0.windows.1".
Milan Davídek