How to fix “could not find or load the Qt platform plugin windows” while using Matplotlib in PyCharm

by

I had the same problem with Anaconda3 4.2.0 and 4.3.0.1 (64-bit). When I tried to run a simple program that uses matplotlib, I got this error message:

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

Reinstalling the application may fix this problem.

Reinstalling didn’t fix it.

What helped was this (found here):
Look for the Anaconda directory and set the Library\plugins subdir (here c:\ProgramData\Anaconda3\Library\plugins) as environment variable QT_PLUGIN_PATH under Control Panel / System / Advanced System Settings / Environment Variables.

After setting the variable you might need to restart PyCharm, if the change does not have an immediate effect.

Even though after that the command line Python worked, TexWorks (which uses Qt as well) displayed an error message very much like it. Setting the QT_PLUGIN_PATH to the directory containing TexWorks’ Qt DLLs (here C:\Users\chris\AppData\Local\Programs\MiKTeX 2.9\miktex\bin\x64) fixed the problem for both programs.

More Related Contents:

  1. How do I type hint a method with the type of the enclosing class?
  2. Cannot install pygame in Pycharm
  3. Python 3.7 anaconda environment – import _ssl DLL load fail error
  4. numpy is already installed with Anaconda but I get an ImportError (DLL load failed: The specified module could not be found)
  5. Basemap import error in PyCharm — KeyError: ‘PROJ_LIB’
  6. Discord Bot can only see itself and no other users in guild
  7. How PyCharm imports differently than system command prompt (Windows)
  8. What is the type hint for a (any) python module?
  9. How to run Pylint with PyCharm
  10. How can I convert a .py to .exe for Python?
  11. How to replace NaNs by preceding or next values in pandas DataFrame?
  12. Of the many findElement(s)/By functions in Selenium, when would you use one over the other?
  13. How to properly round-up half float numbers?
  14. Import arbitrary python source file. (Python 3.3+)
  15. How can I make a for-loop pyramid more concise in Python? [duplicate]
  16. Rolling Mean on pandas on a specific column
  17. Create a main loop with tkinter?
  18. Python 3, Are there any known security holes in ast.literal_eval(node_or_string)?
  19. Are numpy’s basic operations vectorized, i.e. do they use SIMD operations?
  20. Symbol not found: __PyCodecInfo_GetIncrementalDecoder
  21. Schrödinger’s variable: the __class__ cell magically appears if you’re checking for its presence?
  22. How can I run an async function using the schedule library?
  23. How to create a Python dictionary with double quotes as default quote format?
  24. UnicodeDecodeError: ‘utf-8’ codec can’t decode byte 0x8b in position 1: invalid start byte, while reading csv file in pandas
  25. WinError 2 The system cannot find the file specified (Python)
  26. TypeError: ufunc ‘add’ did not contain a loop with signature matching types
  27. AttributeError: module ‘numpy’ has no attribute ‘__version__’
  28. Get the object with the max attribute’s value in a list of objects
  29. error using pip search (pip search stopped working)
  30. How do I align text output in Python?

Leave a Comment