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Thread: Failed to load platform plugin "windows"

  1. #1
    Join Date
    Aug 2009
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    Qt products
    Qt4
    Platforms
    Windows

    Default Failed to load platform plugin "windows"

    After having run my application successfully in Qt4.8 for a long time, I'm now trying to deploy it in QT5.1.0. Everything has built cleanly, Dependency Walker confirms that all of my dependencies (Qt5Cored.dll etc. - the 'd' because I'm initially trying to install a debug version) are present and correct, and I've copied the whole of the 'platforms' directory from the 'plugins' folder into the same directory as my executable. However, when I try to start the program, I obtain the error message:

    "Failed to load platform plugin "windows". Available platforms are:
    minimal
    offscreen
    windows"

    So it seems to want to have it both ways - it can't find "windows", and yet "windows" is one of the ones that it can find. Either way the program won't start.

    What can be causing this?

  2. #2
    Join Date
    Aug 2009
    Posts
    50
    Thanks
    9
    Qt products
    Qt4
    Platforms
    Windows

    Default Re: Failed to load platform plugin "windows"

    OK, I found the solution here. It turns out that I needed to have libEGLd.dll present in my install directory as well, even though Dependency Walker hadn't picked this up.

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