Update Webpage dosen't refesh in xibo Client 1.7.5

I have webpage that update every 5 second it dosen’t work, i teste my page in ie8 and ie11 its work, but inside xibo it dosen’t work, i have i11 in a machine with xibo.

What is the duration of your layout? Is this site hosted locally?
You might want also check the settings in IE itself.

a duration of my layout is 28800

if i preview in browser i sée what à i expect

Perhaps try to make this change in the windows registry - browser emulation.
Enabling HTML5 in the Windows .net Player

If not you can try to adjust the duration of your layout so then it should update after reload.