To install Windows with only a local account, you have to disable Internet access (unplug cable or disable WiFi), then that option magically appears. Once done,

To install Windows with only a local account, you have to disable Internet access (unplug cable or disable WiFi), then that option magically appears. Once done, reactivate access and continue. For most other cruft like games and such there exists a intimidating command line one-liner which gets rid of it.