Application failed to start because it could not find or load the Qt platform plugin "windows" in ""

Slei

Hey,

I've created a Qt 5.9.2 32bit msvc2015 release build, and the exe and everything in a seperate folder runs fine when starting it.
But somehow when I try to start it from another PC i get following error: "This application failed to start because it could not find or load the Qt platform plugin "windows" in "". Reinstalling the application may fix this problem."

So far i tried to put in the
QT5Core.dll
QT5Gui.dll
QT5Widgets.dll
libEGL.dll
qwindows.dll from System32
msvcp120.dll, msvcp140.dll, msvcr120.dll

and all dlls from 5.9.2\msvc2015\bin
But I still get the error.

Does anyone know what the issue might be?

thanks

J.Hilk

@Slei
qwindows needs to be in a sub folder platforms

fyi: You should take a look at the windeployqt-tool here

Slei

thanks for the answer, it seems like this fixed the issue :)

Wayne Hamberg

I have included every library I can imagine from the QT repository and I still get the "This application failed to start because it could not find or load the Qt platform plugin "windows" in "". The Windows dll is in the platform folder and for good measure I have included all the other dlls in that folder as well. I've included about everything imaginable and still get that error. Does anybody have a clue?