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403 Errors For a Subset of Users
Incident
Report for Umbraco Statuspage
Resolved
Incident Summary
Between 22:30 CET and 02:00 CET, access to a subset of Umbraco Cloud websites hostnames was inadvertently blocked for visitors.
Impact
During the incident, affected users received HTTP 403 (Forbidden) responses when attempting to access impacted websites.
Root Cause
The issue was caused by a misconfigured security rule in the web application firewall.
Resolution
The configuration was corrected at 02:00 CET (28/10), and normal access was restored immediately.
Preventive Actions
We are reviewing our deployment and validation processes to prevent similar misconfigurations in future security rule updates.
Between 22:30 CET and 02:00 CET, access to a subset of Umbraco Cloud websites hostnames was inadvertently blocked for visitors.
Impact
During the incident, affected users received HTTP 403 (Forbidden) responses when attempting to access impacted websites.
Root Cause
The issue was caused by a misconfigured security rule in the web application firewall.
Resolution
The configuration was corrected at 02:00 CET (28/10), and normal access was restored immediately.
Preventive Actions
We are reviewing our deployment and validation processes to prevent similar misconfigurations in future security rule updates.