Dual-Monitors Full Screen Flash

UPDATE: These instructions only work on older versions (10.0.22.87) of the Flash Player – there is an updated, easier solution here (via Lifehacker).

If you have two monitors like I do, you may like to have full-screen flash videos playing in your second monitor. There is a problem, though, that as soon as you click in a different window, the Flash goes to non-full screen. In other words, you can’t browse and have full screen flash on your second monitor.

There is a fix for this “security feature,” though. (Disclaimer: Adobe claims that this feature of auto-minimizing is integral to computer security, so proceed with caution)

  1. Make sure you have Flash player version 10.0.22.87 (you can see this version information here).
  2. Open NPSWF32.dll (probably located at c:Windowssystem32Macromedflashnpswf32.dll) in a hex editor.
  3. Go to address 0x136340 and change byte 74 to EB.

I have tried this, and it works great. Original source here.