Change target to x86 in VS2010

platform, visual-studio, visual-studio-2010, x86

Solution

If you only have the `Any CPU` option, you can use the `<New>...` option when choosing the platform and create a new platform setting for the x86 platform, and then choose it.

Problem

I have a VS2010 solution with several projects in it. These projects are winforms apps and libraries. Now I MUST change platform for all projects to X86 from any CPU, but I can not do it, in some of my projects it stays 'Any CPU'. In these cases list contains only 'Any CPU'. It is impossible to change it. What could be the reason of it? How should I fix it? I read some wild solutions, e.g. open sln file in text editor and replace any cpu strings to X86 etc, but I hope there is a more straightforward and cleaner solution. Thanks! VS2010/.net4/c#

Original source