I am using win_amd64; Python 3.8 and SDK 4.0; I in stall SDK and run sucessfully get_python_api.py
But still have this error of “DLL load failed while importing sl: The specified procedure could not be found”.
I tried different python version and also SDK 3 as well, still I have the problem.
I am out options and have no idea what to do 
I should also, I tried to copying and pasting DLL files from different locations as it was suggested in some posts from May, still no success.
Hi,
You should try to identify which DLL is missing with this tool : GitHub - lucasg/Dependencies: A rewrite of the old legacy software "depends.exe" in C# for Windows devs to troubleshoot dll load dependencies issues.
When this issue occurs, the missing dll often is NvEncodeApi.dll. Are you using a laptop ?
Hi, Yes I am using a laptop. It is same DLL as you mentioned were missing and now system is funtioning thanks.
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Good ! I’m curious because several users encounter this too, can you tell me what your GPU is ? Also, Where did you find the missing file ?