[PyQt] QtWebEngineProcess.exe – Bad Image”

Giuseppe Corbelli corbelligiuseppe at mesdan.it
Mon Feb 3 09:34:38 GMT 2020

On 2/2/20 2:09 PM, Phil Thompson wrote:
> On 01/02/2020 08:50, Zhao Lee wrote:
>> When fallback to version 5.13.2 of pyqt5 and PyQtWebEngine, the issue
>> is gone, so what's wrong with the latest version ?
>> 在 2020-01-31 14:32:28,"Zhao Lee" <redstone-cold at 163.com> 写道:
>> When I try to run the QtWebEngineWidgets example
>> https://bpaste.net/MWTA, I got a message dialog with the following
>> information
>> QtWebEngineProcess.exe – Bad Image”
>> “C:\Users\i\AppData\Local\Programs\Python\Python36-32\lib\site-packages\PyQt5\Qt\bin\MSVCP140.dll 
>> is either not designed to run on Windows or it contains an error. Try
>> installing the program again using the original installation media or
>> contact your system administrator or the software vendor for support.”
>> Platform information :
>> Python 3.6.5 (v3.6.5:f59c0932b4, Mar 28 2018, 16:07:46) [MSC v.1900 32
>> bit (Intel)] on win32--Win7
> It looks like the later 32 bit wheels include 64 bit versions of the 
> MSVC DLLs. I assume that if the correct 32 bit versions are installed 
> elsewhere on a system then these will be picked up and the ones in the 
> wheel would be ignored. That would explain why nobody else has reported 
> the problem and why my release tests didn't register it. I assume that 
> you don't already have the 32 bit versions installed elsewhere.
> Can you try installing them from the Microsoft package...
> https://support.microsoft.com/en-gb/help/2977003/the-latest-supported-visual-c-downloads 

Here's how the linker searches, assuming QtWebEngineProcess does not 
alter the search path (I did not check the sources):


A question: technically would it be better to bundle the redist with the 
wheel and just execute it? Not counting licensing issues I mean.

Giuseppe Corbelli

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