How to solve python package error DLL load failed: %1 is not a valid Win32 application?

Hi friend,

Welcome to MSDN forum.

Sorry about you are experiencing this issue.

At first I was thinking if it may be the issue 32 bit or 64 bit version of python or OpenCV, but it seems not, since you’ve tried both of them according to the thread you shared.

So I wonder if it’s the error message’s misleading, and this did happen to someone else, the real error is the OpenCV DLLs cannot be found. To resolve this issue, you could add the OpenCV binaries to the Windows PATH environment variable (opencv binaries path, eg ” C:\opencv\build\bin\Release” ) by following steps:

Control panel -> System and security -> System -> Advanced system settings->  Environment Variables :

You could click New button to add it.

Then restart VS.

Reference thread:

http://stackoverflow.com/questions/14629818/importerror-dll-load-failed-1-is-not-a-valid-win32-application

Not sure if this could absolutely work for you, but it’s worth trying.

Hope it’s helpful.

Best regards,

Fletch

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