Setting the user name and email in TortoiseGit is easy.
- Right-click anywhere in Explorer and choose TortoiseGit → Settings. In the Settings dialog, choose Git. Type in your username and email and click Apply.
These settings are written to the global gitconfig file for this user.
If you prefer using the commandline for this operation, see this post.
Tried with: TortoiseGit 18.104.22.168 and Windows 7 Enterprise x64