Hi, Aravinth kumar Anbalagan wrote: > W: GPG error: http://archive.debian.org squeeze Release: The following > signatures were invalid: KEYEXPIRED 1520281423 KEYEXPIRED 1501892461 > W: GPG error: http://archive.debian.org squeeze-lts Release: The following > signatures were invalid: KEYEXPIRED 1587841717
$ date -u -d @1520281423 ; date -u -d @1501892461 ; date -u -d @1587841717 Mon Mar 5 20:23:43 UTC 2018 Sat Aug 5 00:21:01 UTC 2017 Sat Apr 25 19:08:37 UTC 2020 Maybe this 13 year old trick still works: https://serverfault.com/questions/7145/what-should-i-do-when-i-got-the-keyexpired-error-message-after-an-apt-get-update The --keyserver keys.gnupg.net is dead meanwhile. Try keyserver.ubuntu.com instead. Maybe somebody else with more GPG and/or Debian knowledge can deciper https://wiki.debian.org/SecureApt https://ftp-master.debian.org/keys.html Aravinth kumar Anbalagan's mail client wrote in a quote: > > > deb https://eur01.safelinks.protection.outlook.com/?url=... Greg Wooledge wrote: > You are inside a corporate setting. Very, very corporate. This is probably on the level of the mail client, not of the network. Microsoft Corp. installs itself between its Outlook users and the world. Whenever the cloud thinks that the world is bad, the user gets warned. See https://support.microsoft.com/en-us/office/advanced-outlook-com-security-for-microsoft-365-subscribers-882d2243-eab9-4545-a58a-b36fee4a46e2?ui=en-us&rs=en-us&ad=us https://security.stackexchange.com/questions/230309/is-a-safelinks-protection-outlook-com-link-phishing Have a nice day :) Thomas
