My local version of my code runs just fine. But when I do a web deploy I am getting the following exception:
Could not load file or assembly \'System.Web.
I use Git deployment and was having the same issue. I didn't see an option where I could remove additional files at destination.
I used FTP to connect to the Azure Host and then deleted everything in the /site/wwwroot
directory. Then I used the Management Portal, Deployments tab, and finally the Sync command (i.e. redeploy) and that fixed the issue.