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[ARTICLE · art-141847] src=azure.status.microsoft ↗ pub= topic=ai-infrastructure verified=true sentiment=↓ negative

Intermittent request failures and increased latency across Azure OpenAI, Azure AI Foundry, and Cognitive Services

Microsoft reported that starting at 10:00 UTC on 29 September 2026, a subset of customers using Azure OpenAI Service, Foundry Agent Service, Foundry Models, and Cognitive Services in Sweden Central experienced intermittent request failures, increased latency, and HTTP 5XX error codes. The company said its investigation is focused on observed instability and dependency connectivity timeouts for backend services, with multiple mitigation workstreams underway and monitoring showing improvements in the overall experience. Microsoft said the next update would come within 60 minutes, or sooner if significant developments occur.

read1 min views1 publishedSep 29, 2026

Impact Statement: Starting at 10:00 UTC on 29 September 2026, a subset of customers using OpenAI Service, Foundry Agent Service, Foundry Models, and Cognitive Services, in Sweden Central may experience intermittent request failures, increased latency, and HTTP 5XX error codes when submitting requests to affected models and APIs hosted in this region.

Current Status:

Currently we are monitoring improvements in the overall experience.

Our investigation is focused on observed instability and dependency connectivity timeouts for backend services that are relied on. Multiple mitigation workstreams are underway, and we are closely monitoring service health to assess their effectiveness and determine the most effective path toward full recovery.

The next update will be provided within 60 minutes, or sooner if significant developments occur.

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