Originally published at: http://www.howtogeek.com/180803/how-to-block-an-application-or-.exe-from-running-in-windows/
While doing some cleaning up on a test computer around the office, we realized that we’ve never written about how to block an application from running using a registry hack. It’s easy, so here you go.
Should be worth mentioning that this can still be thwarted by renaming the EXE to something else. So, for example if cmd.exe were blocked using this method, all a user would have to do is make a copy of CMD.EXE call it WHATEVER.EXE and it will run. So unless you put in the infinite amount of ways a file could be named, there is a very easy way around it.
I use whitelisting rather than blacklisting. On non-admin accounts (in Windows 7) Parental Controls allow you to select which applications a user can run. It's effective enough.
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