On the Mobile Safari browser you can come across the error ‘Request header field DNT is not allowed by access-control-allow-headers’ . We’ll explain how to fix this easily. When you’re doing an AJAX call to a different server (eg. api.javablog.be) then where the original page was loaded (eg. www.javablog.be); you’re essentially doing a cross domain AJAX … Continue reading request header field DNT not allowed by access-control-allow-headers