Qt5: Failed to load platform plugin “windows”

Qt5

If you see this error when you start Qt program...

Failed to load platform plugin “windows”. Available platforms are:

create a directory called 'platforms' at the directory where the executable file is located and copy qwindows.dll in there.

Directories should look like:

+
|
+- program.exe
+- Qt5Core.dll
+- Qt5Gui.dll
+- Qt5Widgets.dll+- ........
+- other dll's
|
+- platforms / qwindows.dll