I don't want xml or json file

I don't want xml or json file

Hello,
I have a problem with the record update.
When I post a form with the attribute "action" like this : 
https://creator.zoho.com/api/user/json/appname/view/reportname/record/update
I always get a response in json (or xml if xml is set) file downloading on my machine.
Do you know how to block this ? I judt don't want to download this file.