Preliminary post incident review:
https://azure.status.microsoft/en-gb/status/history/Timeline
15:45 UTC on 29 October 2025 – Customer impact began.
16:04 UTC on 29 October 2025 – Investigation commenced following monitoring alerts being triggered.
16:15 UTC on 29 October 2025 – We began the investigation and started to examine configuration changes within AFD.
16:18 UTC on 29 October 2025 – Initial communication posted to our public status page.
16:20 UTC on 29 October 2025 – Targeted communications to impacted customers sent to Azure Service Health.
17:26 UTC on 29 October 2025 – Azure portal failed away from Azure Front Door.
17:30 UTC on 29 October 2025 – We blocked all new customer configuration changes to prevent further impact.
17:40 UTC on 29 October 2025 – We initiated the deployment of our ‘last known good’ configuration.
18:30 UTC on 29 October 2025 – We started to push the fixed configuration globally.
18:45 UTC on 29 October 2025 – Manual recovery of nodes commenced while gradual routing of traffic to healthy nodes began after the fixed configuration was pushed globally.
23:15 UTC on 29 October 2025 - PowerApps mitigation of dependency, and customers confirm mitigation.
00:05 UTC on 30 October 2025 – AFD impact confirmed mitigated for customers.
Timeline
15:45 UTC on 29 October 2025 – Customer impact began.
16:04 UTC on 29 October 2025 – Investigation commenced following monitoring alerts being triggered.
16:15 UTC on 29 October 2025 – We began the investigation and started to examine configuration changes within AFD.
16:18 UTC on 29 October 2025 – Initial communication posted to our public status page.
16:20 UTC on 29 October 2025 – Targeted communications to impacted customers sent to Azure Service Health.
17:26 UTC on 29 October 2025 – Azure portal failed away from Azure Front Door.
17:30 UTC on 29 October 2025 – We blocked all new customer configuration changes to prevent further impact.
17:40 UTC on 29 October 2025 – We initiated the deployment of our ‘last known good’ configuration.
18:30 UTC on 29 October 2025 – We started to push the fixed configuration globally.
18:45 UTC on 29 October 2025 – Manual recovery of nodes commenced while gradual routing of traffic to healthy nodes began after the fixed configuration was pushed globally.
23:15 UTC on 29 October 2025 - PowerApps mitigation of dependency, and customers confirm mitigation.
00:05 UTC on 30 October 2025 – AFD impact confirmed mitigated for customers.