Dear community, Up to recent, my windows 10 64bit laptop worked fine. However, suddently I get this error after loading certain.exe programs: This application failed to start because it could not find or load the Qt platform plugin 'windows'in ', Available platform plugins are: minimal, offscreen, windows. Reinstalling the application may fix this problem. I'm not a coder, I never used the Qt environment ever and other forum entries didn't help so far, since as far as I went down the rabbit hole, this is all about building code in Qt. All I like to do is run my programs again. This error occured with multiple programs: MikTex & Texworks and converter tools. So far this error is really denying my work and I have no clue.

Thanks in advance. Kind regards, J. Said in: All I like to do is run my programs again. This error occured with multiple programs: MikTex & Texworks and converter tools. So far this error is really denying my work and I have no clue. Hi, the most likely cause here is that your system PATH contains a folder that contains Qt DLLs. Have you installed any new software recently or modified your PATH (shortly before this issue began)?

Mar 22, 2017 - This application failed to start becouse it could not find or load the Qt platform plugin 'windows'. Reinstalling the application may fix the problem.

If I'm right, then the short version of the solution is this: You must remove the offending folder from your PATH. (NOTE: I said 'most likely'. There are many possible reasons for this error).

If you do not know how to check and edit your PATH, then we can guide you through the process. However, be prepared: This will involve multiple steps -- I give you some instructions, then you carry them out and report back the details, then I give you further instructions based on what you found, then you carry them out and report back the details. Iterating as many times as needed until the issue is resolved. Hi and welcome to devnet forum You are right and it is a Qt related issue. However, the problem is with an application using Qt and therefore, they are probably the only devs being able to you. The problem I see is that they have used a particular version of Qt and part of your installation may have been corrupted by whatever reason. The Programs you are listing are probably all from the same open source project and tex related.

I have MikTex and stuff installed as well, but even though I am a developer and know parts of Qt application development, I would go the route and check the MikTex forum and eventually reinstall MikTex again. Said in: said in: All I like to do is run my programs again. This error occured with multiple programs: MikTex & Texworks and converter tools. So far this error is really denying my work and I have no clue. Hi, the most likely cause here is that your system PATH contains a folder that contains Qt DLLs. Have you installed any new software recently or modified your PATH (shortly before this issue began)? If I'm right, then the short version of the solution is this: You must remove the offending folder from your PATH.

(NOTE: I said 'most likely'. There are many possible reasons for this error).

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If you do not know how to check and edit your PATH, then we can guide you through the process. However, be prepared: This will involve multiple steps -- I give you some instructions, then you carry them out and report back the details, then I give you further instructions based on what you found, then you carry them out and report back the details. Iterating as many times as needed until the issue is resolved. Hi JKSH, OK, that sounds as that might be the case. Unfortunately I don't know how to edit the path or which could be the cause that modified the PATH.