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python dll driver access-violation oserror

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July 13, 2026 Score: 2 Rep: 3,994 Quality: Low Completeness: 60%

According to an issue with the same topic, you need to follow the steps described here:
https://picoquant.github.io/snAPI/install.html

As stated in the issue, the error occured due to not following step 1 of the installation instructions:

To install the package, follow these steps:

  1. Install the Microsoft Visual C++ Redistributable(x64) if missing in the system: https://aka.ms/vs/17/release/vcredist.x64.exe.