Error occurred in deployment step 'Add Solution': A feature with ID **************** has already been installed in this farm. Use the force attribute to explicitly re-install the feature.
This is the obvious issue while deploying a sharepoint solution from visual studio . This is simple to fix . Open visual studio and double click on feature 2.Open the property window (View menu ->property window) and set the Always Force Install as True 3. Do the same thing for all the features in the solution and deploy. It will work like charm !!! Thanks Pradeepa achar