My devices are shown as "Offline"

If your device is powered on but show up as Offline under Menu -> Devices your device probably blocks ping attempts.

On Windows, follow these steps to remedy the issue:

Change from Public to Private network

1. Go to Settings -> Network and Internet -> Change connection properties
2. Change Network profile from Public to Private

Activate sharing

1. Open Search bar on Windows (Windows-key)
2. Search for HomeGroup
3. Press Change advanced sharing settings...
4. Under File and printer sharing, check the option Turn on file and printer sharing
5. Press Save changes

You should now be able to see your device as Online.