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The view or its master was not found or no view engine supports the searched locations!!!

On an MVC application, if you are getting error "
The view or its master was not found or no view engine supports the searched locations" and you see that this view (.cshtml file)is already present under the correct folder structure and every thing is correct and you have also tried a lot of posts on SO on how to fix that and that hasn't helped,  just check the build action for this file and make sure that it is set to "content". I have seen the build action set to None (by mistake)and after you deploy/publish  the application, that view would be missing  and you get this error .

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