- Plesk 12.5 for Linux
Unable to install Server Health Monitor, the following error occurs:
WARNING: The following packages cannot be authenticated!
libxcb-render-util0 libcairo2 libdatrie1 libfontenc1 libthai-data libthai0
libxft2 xfonts-encodings xfonts-utils x-ttcidfont-conf
E: There are problems and -y was used without --force-yes
ERROR: An error occurred on attempt to install packages.
Attention! Your software might be inoperable.
Please, contact product technical support.
exit status 1
shows the following:
W: Failed to fetch http://ftp.debian.org/debian/dists/squeeze/main/binary-amd64/Packages.gz 404 Not Found [IP: 126.96.36.199 80]
W: Failed to fetch http://ftp.debian.org/debian/dists/squeeze/contrib/binary-amd64/Packages.gz 404 Not Found [IP: 188.8.131.52 80]
W: Failed to fetch http://ftp.debian.org/debian/dists/squeeze/non-free/binary-amd64/Packages.gz 404 Not Found [IP: 184.108.40.206 80]
E: Some index files failed to download, they have been ignored, or old ones used instead.
The issue was caused by the fact that Debian 6 has reached its end-of-life on Feb 2016 and the distribution has been moved to Debian Archives .
Additonal information can be found in the following sources:
Create a backup file of
# cp /etc/apt/sources.list /etc/apt/sources.list.bak
/etc/apt/sources.listwith correct URLs:
# cat /etc/apt/sources.list
deb http://archive.debian.org/debian squeeze main contrib non-free
deb http://security.debian.org squeeze/updates main contrib non-free
Install Server Health Monitor