Ubicloud incident
Intermittent failures on Canonical's official Ubuntu apt repositories
Resolved after 7 hours 38 minutes, affecting Ubicloud Runners, on September 11, 2026.
Canonical's Ubuntu apt mirrors have stabilized and we are no longer seeing failures on apt installs.
Affected components
Update timeline
- monitoring Sep 11, 2026, 03:00 PM UTC
Canonical's Ubuntu archive mirrors have gone down four separate times today. Their status page (https://status.canonical.com/#/?section=spIncidentHistory) lists each incident as brief and now resolved, but we are still seeing intermittent connection failures against those mirrors, which can cause apt-get steps to hang or fail. The Azure mirrors are holding up better right now. As a workaround, you can point your apt sources at azure.archive.ubuntu.com instead of archive.ubuntu.com and security.ubuntu.com by adding this step to your workflow: - run: printf "http://azure.archive.ubuntu.com/ubuntu/\tpriority:1\nhttps://archive.ubuntu.com/ubuntu/\tpriority:2\nhttps://security.ubuntu.com/ubuntu/\tpriority:3\n" | sudo tee /etc/apt/apt-mirrors.txt This keeps the official mirrors as lower-priority fallbacks, so builds still resolve packages if Azure becomes unreachable. We are monitoring the situation closely.
- resolved Sep 11, 2026, 10:38 PM UTC
Canonical's Ubuntu apt mirrors have stabilized and we are no longer seeing failures on apt installs.
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