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pip install --upgrade pyinstaller Ensure the executable you're trying to run was indeed created with PyInstaller and hasn't been corrupted. If possible, try recreating the executable with the same version of PyInstaller. 4. Check for OS and Architecture Compatibility Make sure the executable and your operating system/architecture are compatible. An executable created on a 64-bit system might not run on a 32-bit system, for example. 5. Reinstall PyInstaller If you're still facing issues, try reinstalling PyInstaller:
