Tailscale Outage History

Tailscale reported a brief issue issuing new certificates for MagicDNS hostnames, which blocked manual certificate issuance and the deployment of new services through Tailscale Serve or Funnel. Existing certificates and active services remained unaffected. The Certificates component moved from up to warn and back to up during the incident. The issue began at 12:43 AM UTC and was resolved by 1:07 AM UTC, lasting about 24 minutes. The provider identified the root cause and issued updates indicating progress toward resolution, with two official status updates issued during the incident.

Tailscale reported slow and unresponsive logins, impacting access to the Coordination server and the admin console (login.tailscale.com). The issue began at Oct 22, 2025 2:32 PM UTC and was resolved by Oct 22, 2025 2:42 PM UTC, lasting about 10 minutes. A user in Pristina, Kosovo reported login problems at 2:39 PM UTC. The incident affected the Coordination server and the admin console, and the provider posted two official updates during the window to note the degraded login experience and subsequent recovery.

On Oct 20, 2025 10:52 PM UTC a partial outage impacted Tailscale's control plane, causing login failures, device authentication timeouts, and disruptions to control-plane updates (ACLs, DNS, routes). Device-to-device traffic for already-connected peers generally remained usable. Admin console access and API endpoints were degraded for a subset of users. The issue affected three components: API (api.tailscale.com), Coordination server, and Admin console (login.tailscale.com). The outage lasted approximately 1 hour and 50 minutes and was resolved by Oct 21, 2025 12:42 AM UTC after two official status updates.

The incident prompted user reports of login problems, inability to load the admin UI, and connectivity issues to tailnet resources. By the end of the incident, API and Coordination server services returned to normal, and the Admin console recovered from degraded status to full availability.

Tailscale's homepage and Knowledge Base search became unavailable due to an upstream provider outage, causing 404 errors on tailscale.com and KB search failures. Admin Console access remained available and core functionality continued to operate.

The incident began at 8:38 AM UTC and was resolved by 11:17 AM UTC. The provider issued two status updates during the incident, and the outage affected the Homepage and Documentation (tailscale.com).

The Dubai (DBI/23) DERP region experienced an outage during an upstream maintenance window, with DERP relay servers in Dubai temporarily offline. This caused connectivity disruptions for users relying on the Dubai DERP region. The outage started at Oct 16, 2025 7:07 PM UTC and concluded at Oct 16, 2025 7:33 PM UTC, lasting about 26 minutes. The provider issued 2 status updates during the incident, describing the regional impact and the subsequent restoration of the DERP relay servers. The issue was localized to the Dubai region and did not indicate a global problem.

A brief degradation affected Tailscale's Coordination server and the admin console (login.tailscale.com), impacting admin access and coordination tasks for a short period. The incident lasted about 16 minutes, beginning at Oct 13, 2025 10:57 PM UTC and being resolved by Oct 13, 2025 11:13 PM UTC.

Status updates documented the issue: the Coordination server and Admin console were listed as degraded at Oct 13, 2025 10:57 PM UTC and returned to normal at Oct 13, 2025 11:13 PM UTC. In total, two official status updates were posted during the incident.

The Tailscale API experienced a brief degraded performance due to a change to the lastSeen field in the Devices API, which impacted some workloads using api.tailscale.com. The incident began at 12:02 PM UTC and lasted about 2 hours and 45 minutes, with service returning to normal by 2:47 PM UTC. The provider issued two status updates during the incident as they investigated mitigations and applied fixes.

The Honolulu DERP relay servers experienced DNS failures, potentially impacting clients using Tailscale in that region. The issue lasted about 9 minutes, from 1:53 PM UTC to 2:02 PM UTC, during which some users may have faced DNS resolution problems and degraded relayed traffic.

The Tailscale status page issued two updates: first noting Honolulu DERP DNS failures and degraded DERP relays, then confirming the issue was resolved as the DERP relays returned to normal. The incident was geographically limited to the Honolulu DERP and did not affect Tailscale services globally.

Tailscale reported a brief disruption in the control plane due to errors on the Coordination server. The outage began at 7:57 PM UTC and was resolved by 8:27 PM UTC, lasting roughly 30 minutes. The Status page issued two updates during the incident, and user reports were limited. The issue affected the Coordination server, which handles control-plane operations for devices.

An issue affected Tailscale's homepage and documentation site, causing errors when accessing the tailscale.com/kb pages. The outage began at 2:42 PM UTC and was resolved by 3:07 PM UTC, lasting about 25 minutes. The Documentation component (tailscale.com) was the primary affected area, with users seeing page errors while the rest of the service remained operational. The Tailscale status page posted three updates during the incident, moving from down to warn and then back to up as services recovered.