Failed to load DLL with error "The specified module cannot be found."

I am trying to use a C++ DLL that does not have any dependencies. When I try to use it in my project, it throws the error Failed to load DLL with error "The specified module cannot be found.". It is certainly able to find the DLL because it sends back the correct file path. Ive tried restarting unity, reimporting the asset, all assets, etc.