Hi Windows users,

I can now signed my commits on Github using Git 2.18.0 and Github Desktop 1.6.1.

Here is what I have done:

• add C:\Program Files\Git\usr\bin to the environment PATH (depends on your Git install) to allow Windows to locate the gpg.exe program
• generate a GPG key and add it to Github: https://help.github.com/articles/generating-a-new-gpg-key (if you don't want to type a passphrase on every commit, you need to press "Enter" when the console will prompt you to type a passphrase)
• configure the Git .gitconfig file properly:

[user]
  name = Xavier Foucrier
  email = YOUR_GITHUB_EMAIL
  signingkey = YOUR_SIGNING_KEY
[gpg]
  program = gpg.exe
[commit]
  gpgsign = true

this file is located in the %USERPROFILE% directory, ie: C:\Users\Xavier\.gitconfig

YOUR_SIGNING_KEY should follow the GPG key ID convention, like this example: https://help.github.com/articles/telling-git-about-your-signing-key/#telling-git-about-your-gpg-key-1.

That's all folks! 🎉