AskUbuntu<p>How to fix signature verification errors when running sudo apt update <a href="https://ubuntu.social/tags/apt" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>apt</span></a> <a href="https://ubuntu.social/tags/updates" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>updates</span></a> <a href="https://ubuntu.social/tags/repository" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>repository</span></a> <a href="https://ubuntu.social/tags/gnupg" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gnupg</span></a></p><p><a href="https://askubuntu.com/q/1555845/612" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">askubuntu.com/q/1555845/612</span><span class="invisible"></span></a></p>