apt update - Certificate verification failed

[AzadMammadov]

Hi,

I'm trying install tools but whatever I try the same error appears always "E: Unable to locate package .... "

I tried to update /etc/apt/sources.list file added lines below initially (with root user):

deb http://http.kali.org/kali kali-rolling main contrib non-free
deb-src http://http.kali.org/kali kali-rolling main contrib non-free

result:

# apt update                
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
  503  Service Unavailable [IP: 192.99.200.113 80]
Reading package lists... 
DoneBuilding dependency tree... 
DoneReading state information... 
DoneAll packages are up to date.
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease 503  Service Unavailable [IP: 192.99.200.113 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.

then tried this one:

deb https://http.kali.org/kali kali-rolling main contrib non-free
deb-src http://http.kali.org/kali kali-rolling main contrib non-free


result:

# apt update                
Ign:1 https://http.kali.org/kali kali-rolling InRelease
Ign:1 https://http.kali.org/kali kali-rolling InRelease
Ign:1 https://http.kali.org/kali kali-rolling InRelease
Err:1 https://http.kali.org/kali kali-rolling InRelease
  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: 192.99.200.113 443]
Reading package lists... DoneBuilding dependency tree... DoneReading state information... Done
All packages are up to date.
W: Failed to fetch https://http.kali.org/kali/dists/kali-rolling/InRelease  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: 192.99.200.113 443]
W: Some index files failed to download. They have been ignored, or old ones used instead.

Please help.

[zebrascanfly]

I don't think you need the source probably. comment it out. try this

deb http://http.kali.org/kali kali-rolling main contrib non-free

$ sudo apt update
$ sudo apt full-upgrade -y

[AzadMammadov]

I tried and again got this result:

# sudo apt update
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
  503  Service Unavailable [IP: 192.99.200.113 80]
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://http.kali.org/kali/dists/kali-rolling/InRelease  503  Service Unavailable [IP: 192.99.200.113 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.