Can't run software updater without error

[JackB1959]

I have been trying to resolve this problem for weeks to no avail. Can someone please help? I'm stuck in the Zorin OS 18 hole

Here is the code I run: sudo apt update

Here is the result:

Hit:1 https://brave-browser-apt-release.s3.brave.com stable InRelease                                                                                                           
Hit:2 http://archive.ubuntu.com/ubuntu noble InRelease                                                                                                                          
Hit:3 https://packages.microsoft.com/repos/edge-stable stable InRelease                                                                                                         
Hit:4 http://security.ubuntu.com/ubuntu noble-security InRelease                                                                                                                
Hit:5 https://repo.waydro.id noble InRelease                                                                                                                                    
Hit:6 https://packages.mozilla.org/apt mozilla InRelease                                                                                                        
Hit:7 https://packages.zorinos.com/stable noble InRelease                                                                                 
Hit:8 https://packages.zorinos.com/patches noble InRelease                            
Hit:9 https://packages.zorinos.com/apps noble InRelease                               
Hit:10 https://packages.zorinos.com/drivers noble InRelease                           
Ign:11 http://co.archive.ubuntu.com/ubuntu noble-updates InRelease                    
Ign:12 http://co.archive.ubuntu.com/ubuntu noble-backports InRelease
Ign:11 http://co.archive.ubuntu.com/ubuntu noble-updates InRelease
Ign:12 http://co.archive.ubuntu.com/ubuntu noble-backports InRelease
Ign:11 http://co.archive.ubuntu.com/ubuntu noble-updates InRelease
Ign:12 http://co.archive.ubuntu.com/ubuntu noble-backports InRelease
Err:11 http://co.archive.ubuntu.com/ubuntu noble-updates InRelease
  Cannot initiate the connection to co.archive.ubuntu.com:80 (2800:1e0:d1f:ffff::49). - connect (101: Network is unreachable) Could not connect to co.archive.ubuntu.com:80 (200.25.7.49), connection timed out
Err:12 http://co.archive.ubuntu.com/ubuntu noble-backports InRelease
  Cannot initiate the connection to co.archive.ubuntu.com:80 (2800:1e0:d1f:ffff::49). - connect (101: Network is unreachable)
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://co.archive.ubuntu.com/ubuntu/dists/noble-updates/InRelease  Cannot initiate the connection to co.archive.ubuntu.com:80 (2800:1e0:d1f:ffff::49). - connect (101: Network is unreachable) Could not connect to co.archive.ubuntu.com:80 (200.25.7.49), connection timed out
W: Failed to fetch http://co.archive.ubuntu.com/ubuntu/dists/noble-backports/InRelease  Cannot initiate the connection to co.archive.ubuntu.com:80 (2800:1e0:d1f:ffff::49). - connect (101: Network is unreachable)
W: Some index files failed to download. They have been ignored, or old ones used instead.

Any help highly appreciated

[Forpli]

Is a VPN enabled? If yes, it can help to turn it off.
You can also test if it helps to set the download to another server.

[Aravisian]

In Software & Updates app, under "Download from", set to Main Server.
Once done, try in terminal:

sudo apt update && sudo apt full-upgrade

EDIT: Crosslinking to your other thread, as both touch on the Main Server question:

Can't Install VLC software: Ubuntu server error

Your output shows that you are using a local Regional server in Columbia, not the Main Server. The Main Server supplies to the regional locations; the onus is on them to ensure that their servers are updated and running. Sadly... many mirrors are a bit lax. For this reason, we suggest users having issues with regional mirrors to stay on Main Server. What you can do to Make Certain you are on the Main Server is elevate to root as @Forpli explains here: Once elevated to Root, select "Other lo…

[calfonsoc]

I can confirm the Colombian server is down:
curl -I http://co.archive.ubuntu.com
Failed to connect to co.archive.ubuntu.com port 80 after 134878 ms: Couldn't connect to server
curl -I http://archive.ubuntu.com
HTTP/1.1 200 OK Date: Thu, 02 Jul 2026 15:41:10 GMT Content-Type: text/html;charset=UTF-8 Connection: keep-alive Server: cloudflare

I also changed the sources lists since changing to the main server in "Software & update" did not change that

sudo sed -i 's|co.archive.ubuntu.com|archive.ubuntu.com|g' /etc/apt/sources.list

[Aravisian]

@calfonsoc

I also changed the sources lists since changing to the main server in "Software & update" did not change that

You are not alone in this, nor is it new with Zorin OS 18.
The effective action is to manually change the sources.list.