On 25/05/2014 01:06, Richard R. Pope wrote: > Carl, > I think that inactive support for XP will continue for sometime. It= =20 > did so for all of the other versions of Windows. The registration=20 > requirement will eventually be dropped. > > What will eventually kill XP is that there will be a point that=20 > software upgrades will require Win8.x or higher. I agree here. I recently downloaded the free Visual Studio 2013 Desktop Edition and wrote a simple C program which did nothing special and only used the standard Windows API. I compiled the application as a 32 bit executable and tried to run on Windows XP, with the relevant runtime environments. This didn't work. It turns out you need to specifically target WinXP by using a particular profile. This isn't obvious and if I hadn't tested I would never have noticed. The resulting executable works fine on any version of Windows above XP. I wonder how many apps will turn up on the internet that are compiled without realising this, therefore will simply fail on XP. David --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .