`Unable to Load DLL 'sqlite.interop.dll'` – Debugging Tips in Visual Studio

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Understanding the Error

Common Error Variants

unable to load dll sqlite interop dll

unable to load dll file in Visual Studio

Potential Causes

Missing or Corrupted DLL:
If the DLL file is missing or corrupted, the runtime cannot load it. This can happen due to an incomplete installation or a corruption during download.

Incorrect Platform Target:
The SQLite DLL is platform-specific, meaning you need the correct version for your application's target platform (x86 vs x64).

Misconfigured Path:

Deployment Issues:

Solutions and Workarounds

Ensure DLL Integrity and Placement

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Match Platform Targets

Right-click on your project in Visual Studio

Go to Properties > Build

Check Your Path Configurations

Including it in your project and setting its Copy to Output Directory property to Copy always.

Ensuring that the runtime environment has access to the paths where these DLLs are stored.

Including DLL in Deployment

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Additional Debugging Tips

Event Viewer: Sometimes, additional details about the DLL loading issue can be found in the Windows Event Viewer.