Outage in Tailscale
Certificate creation issues
Resolved Minor
August 10, 2026 - Started 17 days ago
- Lasted 7 days
Incident Report
Summary AI Generated
Tailscale experienced an 8.6-hour incident where new TLS certificates could not be issued for MagicDNS hostnames, blocking manual certificate requests and preventing new services from being deployed via Tailscale Serve or Funnel. Existing certificates and already-running Serve/Funnel services remained operational throughout. The root cause was identified and a fix was deployed, with the team monitoring for further issues.
We are investigating a problem which is causing problems with issuing new certificates for MagicDNS hostnames. This problem affects manual certificate issuance and the deployment of new services through Tailscale Serve or Tailscale Funnel.
Existing certificates and services currently exposed by Serve or Funnel will remain unaffected as long as the current certificates stay valid.
Components affected
Tailscale CertificatesTrusted by 1,000+ teams
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Latest Updates ( sorted recent to last )
MONITORING
14 days ago - at 08/13/2026 05:18PM
We have identified the problem, and a fix has been deployed. We are monitoring for any further problems.
INVESTIGATING
15 days ago - at 08/12/2026 01:25PM
We are investigating a problem which is causing problems with issuing new certificates for MagicDNS hostnames. This problem affects manual certificate issuance and the deployment of new services through Tailscale Serve or Tailscale Funnel.
Existing certificates and services currently exposed by Serve or Funnel will remain unaffected as long as the current certificates stay valid.
MONITORING
15 days ago - at 08/12/2026 09:30AM
A fix has been deployed and we are monitoring for any further problems.
IDENTIFIED
16 days ago - at 08/11/2026 04:28PM
We have identified the problem and are rolling out a fix.
INVESTIGATING
16 days ago - at 08/11/2026 12:30PM
We are investigating problems with issuing new certificates for MagicDNS hostnames. This problem affects manual certificate issuance and the deployment of new services through Tailscale Serve or Tailscale Funnel.
Existing certificates and services currently exposed by Serve or Funnel will remain unaffected as long as the current certificates stay valid.
RESOLVED
17 days ago - at 08/11/2026 12:42AM
This incident has been resolved.
MONITORING
17 days ago - at 08/10/2026 06:29PM
A fix has been deployed and we are monitoring for any further problems.
IDENTIFIED
17 days ago - at 08/10/2026 05:19PM
We have identified the problem and are rolling out a fix.
INVESTIGATING
17 days ago - at 08/10/2026 04:10PM
We are investigating a problem which is causing problems with issuing new certificates for MagicDNS hostnames. This problem affects manual certificate issuance and the deployment of new services through Tailscale Serve or Tailscale Funnel.
Existing certificates and services currently exposed by Serve or Funnel will remain unaffected as long as the current certificates stay valid.
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