update is not working

[Dacia]

sudo apt-get update
[sudo] password for kali:
Ign:1 http://http.kali.org/kali kali-rolling InRelease
Ign:1 http://http.kali.org/kali kali-rolling InRelease
Ign:1 http://http.kali.org/kali kali-rolling InRelease
Err:1 http://http.kali.org/kali kali-rolling InRelease
Connection failed [IP: 192.99.200.113 80]
Reading package lists... Done
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease Connection failed [IP: 192.99.200.113 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.

I just can't update in the past few days and not sure why and how to fix it.
Thx