6.0 and PyQt5 import error: missing DLL

[VegarS]

I get an import error (missing DLL) with cx_Freeze 6 and PyQt5. Can be reproduced with the PyQt5 sample files:

Seems similar to #328, but the workaround there is not working.

Versions:
Python 3.7.3
PyQt5 5.13.0
cx_Freeze 6.0 (from pip/pypi)

[jpeg13]

Maybe you can get a workaround by manually copying the missing DLL (presumably MSVCP140.dll from Microsoft Visual C++ 2015 Redistributable package) into the PyQt5 subdirectory inside the build directory, or into the build directory itself. I get a similar error message with PySide and cx_Freeze 5.1.1 or 6.0 (but not 6.0b1), see my comment to #278.

[VegarS]

It seems like several DLLs are missing from build\exe.win-amd64-3.7\PyQt5.

To get it working I made a build with cx_Freeze 5.1.1 and copied over the extra DLLs that 5.1.1 included in that directory: python3.dll, Qt5Core.dll, Qt5Gui.dll, Qt5Network.dll, Qt5Widgets.dll and VCRUNTIME140.dll

[marcelotduarte]

I tested the sample file on Linux and it worked. I will test on Windows later.

[marcelotduarte]

I tested on Windows with py37-32. The workaround is to copy python3.dll to the directory where the executable was made. cx_Freeze copies python37.dll, but does not copy python3.dll. The vcruntime140.dll may also have to be copied when it no longer exists on the system. I will do a PR later.

[VegarS]

I can confirm that copying python3.dll to the executable directory works.

[Berserker66]

Same deal on PySide2, python3.dll is missing there as well

[stephenmhall]

adding an include_files to the python3.dll solves you forgetting to copy it manually.

[tamenol]

I have the same issue. I downgraded to python3.5.4 and problem solved. cx_freeze could successfully make an .msi and it can run without errors.

[zkn365]

“copy python3.dll to the directory where the executable was made” can solve my problem.
Python 3.7.4
PyQt5 5.13.0
cx_Freeze 6.0

[marcelotduarte]

cx_Freeze 6.1 has just been released.
Assuming this has been resolved.
If you had issues please re-open.