Standalone windows build giving mono: dll not found error

I have built a project for windows, but everytime I run it on a client machine I receive the error:

mono: cannot load dll

Make sure you have the “yourProjectName_Data” folder in the same directory.

It’s generated when you publish your project.
Hope this help.

If using a batch script with -build*Player you need different target filenames otherwise they all share the same _data folder and each new platform will delete the _data contents. So if Windows is not the last step you wont have mono.dll in the _data folder any more.