How to Fix the 'RuntimeError: Package Fails Sanity Check' in NumPy and Pandas?

Addressing the "runtimeError: package fails to pass a sanity check" Issue for NumPy and Pandas

The error "RuntimeError: The current Numpy installation fails to pass a sanity check due to a bug in the windows runtime" arises when attempting to use certain versions of NumPy and Pandas.

The Root Cause

As indicated in the error message, this issue is caused by a compatibility problem within the Windows runtime. Specifically, when using Python 3.9 and NumPy version 1.19.4, the sanity check fails.

The Solution

To resolve this issue, you can take the following steps:

1. Uninstall NumPy 1.19.4: Remove the incompatible version of NumPy using the appropriate package manager for your system (e.g., pip, conda).
2. Install NumPy 1.19.3: Install a compatible version of NumPy by replacing "1.19.4" with "1.19.3" in the installation command:

pip install numpy==1.19.3

Update (January 5th, 2021)

The latest NumPy release, version 1.19.5, has reportedly addressed this issue. Updating to this version should resolve the runtime error.

Additional Information

For further details on this issue, refer to the following resources:

• [Visual Studio Developer Community Discussion](https://developercommunity.visualstudio.com/content/problem/1207405/fmod-after-an-update-to-windows-2004-is-causing-a.html)

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