Auth service token validation errors in EU
INC-2839LowResolved
Brief spike in 401 responses from auth-service in eu-west-1 due to JWKS rotation.
Duration
18m 0s
Impacted Users
850
Regions
eu-west-1
Response SLA
180s
Status Page
Not posted
War Room
#inc-2839
Detected at: 7/1/2026, 2:02:00 PM
Acknowledged: 7/1/2026, 2:03:00 PM
Last update: 7/1/2026, 2:18:00 PM
Incident Timeline
Chronological log of all events during this incident
Theo Lambertresolved7/1/2026, 2:18:00 PM
401 rate back to baseline. Resolving.
Arjun Mehtanote7/1/2026, 2:12:00 PM
Purging JWKS cache across all authz-engine instances
Theo Lambertnote7/1/2026, 2:08:00 PM
Identified stale JWKS cache as cause
Theo Lambertacknowledged7/1/2026, 2:03:00 PM
Theo Lambert acknowledged
Naomi Chencreated7/1/2026, 2:00:00 PM
Incident created from alert ALR-1240 (auth 401 rate spike)
Incident Commander
T
Theo Lambert
Senior Site Reliability Engineer
@theo
Quick Actions
Responders
TTheo Lambert
AArjun Mehta
Affected Services
Linked Alerts
ALR-1240LowResolved
Auth 401 rate is 3.2% (threshold 3%)
Tags
#auth#jwks#eu-west-1