Everything that runs on Windows 7 runs on Windows 8

But …

Note that the following changes that impact compatibility

– Windows OS version increment
          Microsoft Windows [Version 6.1.7601] (windows 7 sp1)
          Microsoft Windows [Version 6.2.8102] (windows 8 dev preview)

– Desktop Window Manager always on
          Existing methods to turn off DWM will now fail silently

– Startup apps change
          Windows makes it easier to disable startup apps (no guarantee to start)

–. NET 3.5 on demand
          Default Framework is .NET 4.5