Could not find the Qt platform plugin "windows"

[JonB]

@Deathcomes
Set environment variable QT_DEBUG_PLUGINS=1, either from command line and then invoke your executable, or from within Creator's run-time environment variables and run app from within Creator. Look at the output you will get, to see where the problem originates.

[Deathcomes]

It prints this

QFactoryLoader::QFactoryLoader() checking directory path "MY_PROJECT_PATH/release/platforms" ...

Is there a way to change this? It should by default be "C:\Qt\5.12.1\mingw73_64\plugins" right?

[SGaist]

Hi,

Are you trying to run your application outside Qt Creator ? If so, did you proceed with the deployment procedure ?

[Deathcomes]

@SGaist No inside.

[Deathcomes]

Any ideas? If you want more details tell me.

[SGaist]

Please show some patience and allow at least 24 hours before bumping your own thread. This is a voluntary driven forum and people answering here might not live in the same time zone as you.

Start your application with the QT_DEBUG_PLUGINS environment variable set to 1. It will log what happens with the plugin.

[Deathcomes]

@SGaist Thank you! Already done that!

@Deathcomes said in Could not find the Qt platform plugin "windows":

It prints this

QFactoryLoader::QFactoryLoader() checking directory path "MY_PROJECT_PATH/release/platforms" ...

Is there a way to change this? It should by default be "C:\Qt\5.12.1\mingw73_64\plugins" right?

Is there a way to config this path? It should already be fine (tried it on other projects and it works ok (only difference is qt version)) but it seems not.

[Bonnie]

Have you put any other file to "MY_PROJECT_PATH/release" folder?
What if you completely delete that folder and try again?

[Deathcomes]

@Bonnie I always leave that folder as it so that i don't "break" something. I will check it although!

[Deathcomes]

@Bonnie I checked it and the same thing happens.

[hskoglund]

Hi, if you try run another Qt project from inside Qt Creator, like one of Qt's examples, do you get the same error?

[Deathcomes]

@hskoglund Theoretically no because i have another project (although with Qt5.2.1) which compiles and runs (from inside Qt) perfectly.
Should i try to test with a new project with 5.12.1?

[hskoglund]

Yes, try an example project with 5.12.1.

[Deathcomes]

@hskoglund Same thing happens with a new one.

[SGaist]

Do you have other versions of Qt installed on your system ? For example by other applications ?

[Deathcomes]

@SGaist Yes Qt 5.2.1 because i also maintain an older project.

These are my versions settings:

[SGaist]

I meant: check your system for other Qt version that may have been installed along any of your applications.

[Deathcomes]

@SGaist Ow! Sorry! How do i check that?

[Deathcomes]

@SGaist I searched but i didn't find any.

[Deathcomes]

Should i reinstall Qt 5.12.1 to possibly correct the problem?