Packaging for Windows bug?

Hello,

when I what to use “Package project → Windows → 32 or 64bit” the Internet browser window appears with the “Unreal Engine 4 Documentation” page. Packaging for other platforms works well.
Am I missing something really basic? Any suggestions on how to solve it?

Thank you!

Project Settings > Supported platforms will show what platforms are supported by the project.

IIRC if you are running mac/linux you will be unable to package for Windows.