If your Kodi (formerly XBMC) is giving you IPTV Simple Client disable message, here’s what you can do to resolve it. In case you find it difficult to follow the textual instructions we have also a video tutorial at the end of the instructions.
-> Go into Kodi (XBMC Or DBMC) and go into System option.
-> On your left-hand side there will be a Menu, select Add-ons and hit OK
-> Now go into My Add-ons from the Menu and go into PVR clients
-> Scroll down to PVR IPTV Simple Client and hit OK, you will see a pop-up with the Menu on the left-hand side, just click on Enable.
-> Now hit the return key and return to the Main Menu of Kodi and click on IPTV
-> You will be able to see a list of channels which means iPTV simple client is enabled and working.
Here is the video tutorial on the above steps: