Debian 8

[vikozo]

hello
i have one a laptop my Debian 8 working.
my strange problem, some times i can't do a update

# apt update -y
Fehl http://security.debian.org jessie/updates InRelease
Fehl http://security.debian.org jessie/updates Release.gpg
»security.debian.org« konnte nicht aufgelöst werden.
Fehl http://httpredir.debian.org jessie InRelease
.....

to surf the net works

if i do reboot and redo the command it works, or not,

so why it is happen and how to make the connection more sure?

have a nice day
vinc

[arochester]

What does your sources list say? Can you Copy and Paste is here?

Have you also tried The German Debian Forum >>> https://debianforum.de/forum/