Chromebook Roaming Client DoH Service

Incident Report for DNSFilter

Resolved

An issue was identified affecting our DoH service that may have impacted customers in the London region. This did NOT affect DNS1/DNS2 UDP/TCP/TLS/DoT services. We identified the fault on Tuesday the 25th and resolved the it by 20:00 UTC by updating all affected servers.

In addition, we have improved our monitoring and automation by adding a new failsafe to avoid this from happening again in the future.

Posted Nov 25, 2025 - 15:00 EST