Microsoft Restores My Sign-Ins After MFA Setup Outage
Summary
Microsoft restored My Sign-Ins after an outage blocked some users from setting up MFA or accessing the service, returning 504 errors. It attributed the issue to a cache configuration change and failover that drove high CPU and memory use during peak EU traffic.
Key points
- Some users could not set up MFA or access mysignins[.]microsoft[.]com and encountered 504 Gateway Timeout errors.
- Microsoft said it failed over to alternate infrastructure and monitored service telemetry during mitigation.
- Microsoft attributed the issue to a recent cache configuration change that required a failover.
- During peak EU traffic, the service experienced high CPU and memory utilization and could not process the request volume.
- Microsoft said mitigation actions were rolled back and traffic was restored to the original infrastructure.
Article Details
- Event Type
- Service outage
- Impact
- Some users were unable to set up MFA or access the My Sign-Ins service and encountered 504 Gateway Timeout errors. Microsoft restored access after rolling back mitigation actions; it attributed the disruption to a cache configuration change and failover that caused high CPU and memory utilization during peak EU traffic.