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Azure West US networking anomalies place Microsoft cloud reliability under scrutiny

7/23/2026

Networking and traffic-routing anomalies in the Azure West US region are producing connectivity failures and elevated latency, Microsoft (MSFT) confirmed, with an active investigation now underway.

No root cause has been identified publicly. No resolution window has been set.

What Microsoft is examining Two distinct problem categories are under examination in Azure West US: anomalies in network infrastructure and anomalies in how traffic moves through the region.

Both are producing real-time symptoms for customers. Microsoft has not said which is the primary driver, and has not indicated how long either condition has been active. Customer-facing symptoms fall into two types.

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