This trick works on both Windows 8 and Windows RT.
However, some websites are allowed to play Flash YouTube, for example.
Uncheck the Download updated compatibility lists from Microsoft checkbox and click Close.
If you leave this option enabled, the changes you make to the whitelist will be overwritten.
Press WinKey+R to kick off the Run dialog.
poke the Find Next button and youll see the section in the file.
Go back to the Start screen and pop swing open the Modern version of Internet Explorer 10.
Press the WinKey+I shortcut to initiate the configs charm and click Internet Options.
smack the Delete button to delete your browsing history.
After you do, Flash will now be enabled for the websites you added to your whitelist.
Note that Flash is disabled in the new interface to improve battery life.
Enabling Flash for Flash-heavy websites could negatively impact your computers battery life.
Thanks toMarvin_S over at the XDA Developers forumsfor discovering this trick!
