[SOLVED] Refresh/Update: "An error occurred during the signature verification"

[bananajoe75]

when i press the refresh button i get this error message:

starting apt-get update
Hit:1 http://ftp.de.debian.org/debian bookworm InRelease
Hit:2 http://security.debian.org bookworm-security InRelease
Hit:3 http://ftp.de.debian.org/debian bookworm-updates InRelease
Get:4 http://download.proxmox.com/debian/pve bookworm InRelease [2768 B]
Err:4 http://download.proxmox.com/debian/pve bookworm InRelease
  Signed file isn't valid, got 'NODATA' (does the network require authentication?)
Fetched 2768 B in 0s (6572 B/s)
Reading package lists...
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.proxmox.com/debian/pve bookworm InRelease: Signed file isn't valid, got 'NODATA' (does the network require authentication?)
W: Failed to fetch http://download.proxmox.com/debian/pve/dists/bookworm/InRelease  Signed file isn't valid, got 'NODATA' (does the network require authentication?)
W: Some index files failed to download. They have been ignored, or old ones used instead.
TASK OK

this are my settings for the repositories:

Until yesterday everything worked without any problem.

Someone has an idea?

 

[lucavornheder]

Do you have a network authentication or something like this?

 

[bananajoe75]

Do you have a network authentication or something like this?

nothing like that, i even switched off my apt-cacher-ng settings.

 

[fabian]

please clear your apt-cacher-ng state (/var/cache/apt-cacher-ng) and restart it, and clear the apt lists as well (/var/lib/apt/lists), it probably stored a corrupt file somewhere.. this is a common problem with acng, even on plain Debian..

 

[bananajoe75]

Thanks! Deleting all the cached data from apt-cacher-ng fixed it!