Tag Archives: This application failed to start because no Qt platform plugin could be initialized

This application failed to start because no Qt platform plugin could be initialized

Error prompt

When opening designer.exe in pyqt5 tools, the following error is prompted:

designer

This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

resolvent

Locate Python 38 \ lib \ site packages \ pyqt5 \ QT \ plugins , which depends on the location where you install python. The complete road strength of this location on my computer is: C: \ users \ focksor \ appdata \ local \ programs \ Python \ Python 38 \ lib \ site packages \ pyqt5 \ QT \ plugins .

Copy the platforms folder under this directory to Python 38 \ lib \ site packages \ pyqt5_ Tools \ QT \ bin , and replace the files in platforms in this directory.

Open designer.exe again, and the problem should have been solved.

reference resources

PyQt5 Designer is not working: This application failed to start because no Qt platform plugin could be initialized

Tips

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