Reply To: Error in meshing which says,”One or more entities failed to mesh.”

[Sampat Kumar]

However, Discovery is good to use for capturing the defeature part in the geometry. 
You can search for repairing tutorials on YouTube with the keyword" stl facets geometry repair in SpaceClaim" 
Are you able to generate the mesh with the above-mentioned geometry after doing an auto fix ? 

Best Regards,
Sampat