by jasonl » Tue Oct 11, 2011 5:11 pm
Close WMC, open regedit, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Multimedia\TV\Tuning Spaces\Digital Cable and set the MaxChannel key to 9999 (decimal). Then, reopen WMC, go into Tasks > Settings > TV > Guide > Get Latest Guide Listings. Once the download finishes, you should have all channels.