PyInstaller WARNING: lib not found

Question

I know this type of question has been asked here before, but I did not find a working solution to it. I have a python file which I want to convert to an exe on Windows 10. I

Answer 1

When there is a whole slew of WARNINGS coming from pyinstaller about not being able to locate Windows DLLs, you might check to see if they're in one of the two following locations:

C:\Windows\System32\downlevel
C:\Windows\SysWOW64\downlevel

You can add one or both to the PATH variable, like so and those warnings should disappear:

set PATH=%PATH%;C:\Windows\System32\downlevel

I mention this because it's easier than finding and copying the DLLs to a folder on the path like Alex F mentioned. I also noticed some of the DLLs you're unable to locate are in the folders I called out above.

Answer 2

Follow the next steps to solve the "PyInstaller WARNING:lib not found:api-ms-win-crt SOLUTION" problem:

1. run the following command line in command prompt or windows power-shell
2. pyinstaller --windowed --paths C:\Windows\System32\downlevel application_name.py

Additional information can be found here at the MS website.

Answer 3

I found the DLL's in system32/downlevel and syswow64/downlevel and copied all of them to the respective parent folders (system32 and syswow64). Something that Ritesh Singh's command will do. Try a restart after copying if it still does not work.