cant update Please help - archive canonical no release

[vaspatt3]

Hit:1 http://archive.ubuntu.com/ubuntu noble InRelease
Hit:2 http://archive.ubuntu.com/ubuntu noble-security InRelease
Ign:3 http://archive.canonical.com noble InRelease
Hit:5 http://archive.ubuntu.com/ubuntu noble-updates InRelease
Hit:6 http://archive.ubuntu.com/ubuntu noble-backports InRelease
Err:7 http://archive.canonical.com noble Release
  404  Not Found [IP: 185.125.188.12 80]
Hit:8 https://packages.microsoft.com/repos/edge stable InRelease
Hit:9 https://dl.google.com/linux/chrome/deb stable InRelease
Hit:10 https://packages.mozilla.org/apt mozilla InRelease
Hit:11 https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu noble InRelease
Hit:12 https://ppa.launchpadcontent.net/mozilla...ext/ubuntu noble InRelease
Hit:4 https://repo.linuxliteos.com/linuxlite galena InRelease
Reading package lists...
E: The repository 'http://archive.canonical.com noble Release' does not have a Release file.

[stevef]

The line beginning 'Err:7' suggests an unexpected repository has been added to your system.
http://archive.canonical.com
However it has no related software. As a result, the update/upgrade fails. We can simply remove the archive repository from the list, but we need to understand any steps you followed which may have caused the canonical archive repository to be added to your system.

Did your system update ok originally when first installed ?
Have you changed anything recently which may have triggered the problem ?
Anything between the last working update/upgrade and the problem beginning - for example installing software or driver modules - may be the cause.

[vaspatt3]

The line beginning 'Err:7' suggests an unexpected repository has been added to your system.
http://archive.canonical.com
However it has no related software. As a result, the update/upgrade fails. We can simply remove the archive repository from the list, but we need to understand any steps you followed which may have caused the canonical archive repository to be added to your system.

Did your system update ok originally when first installed ?
Have you changed anything recently which may have triggered the problem ?
Anything between the last working update/upgrade and the problem beginning - for example installing software or driver modules - may be the cause.

Thank you for taking the time to reply.  I may have checked off canonical from the Synaptic manager yesterday.  I was able to piece my steps together after I posted this and resolved it for now.  However why would it be listed if it would affect the update manager?  Ironically the cache was not updating because of canonical.  What would happen if by accident this happens agaiin?

[stevef]

Thank you for taking the time to reply.

You're welcome.

I was able to piece my steps together after I posted this and resolved it for now.

There have been a few posts reporting this problem recently.  Can you explain what you found to help others and help us work out if a common error is being made ?

However why would it be listed if it would affect the update manager?

The software sources list is a protected system resource, but it needs to be flexible for normal operation.  Any changes have to be done by an authenticated user operating at privileged level.  However, a user can make mistakes.

What would happen if by accident this happens agaiin?

The update/upgrade process will not work but it will generate an error message showing what is wrong.