We are running NGINX 7.65 on a Ubuntu 10 server. NGINX is setup as a reverse proxy to an IIS website where the viewstate is passed through the headers. We want to set up the cache feature in NGINX but need to make sure it does not mess up the viewstate and cookies associated with each individual customer. Will adding this to the nginx.conf file fix this - proxy_pass_header Header or is there more that would need to be done? Thanks,