{
  "slug": "azure-monitor-container-insights-legacy-authentication-retirement",
  "title": "Azure Monitor: Container Insights legacy authentication retirement",
  "summary": "Retirement date for legacy authentication in Azure Monitor Container Insights: 30 Sep 2026. Clusters that use it must move to Managed Identity authentication.",
  "cloud": "azure",
  "service": "Azure Monitor",
  "service_slug": "monitor",
  "category": "feature",
  "type": "retirement",
  "announced_date": "2025-10-07",
  "effective_date": "2026-09-30",
  "effective_precision": "day",
  "impact": "Legacy authentication in Container Insights is retired on 30 Sep 2026. Clusters that still use legacy authentication are affected and must be migrated to Managed Identity authentication. Syslog collection and High Scale mode are available only with Managed Identity.",
  "migration_path": "1. Migrate each cluster to Managed Identity authentication before 30 Sep 2026.\n2. Use the single-click migration in the Azure portal, or the command line options and bulk migration script in the Azure Monitor documentation.\n3. Follow the [migration guidance](https://aka.ms/CILegacyAuthMigration).",
  "replacement": "Managed Identity authentication",
  "affected_versions": [],
  "source_url": "https://azure.microsoft.com/updates?id=500853",
  "extra_source_urls": [
    "https://aka.ms/CILegacyAuthMigration"
  ],
  "vendor_ref": "500853",
  "last_checked_at": "2026-11-12T09:55:19.345Z",
  "created_at": "2026-11-13T13:36:44.208Z",
  "updated_at": "2026-11-13T13:36:44.208Z",
  "url": "https://eolwatch.dev/items/azure-monitor-container-insights-legacy-authentication-retirement",
  "short_url": "https://eolwatch.dev/i/16",
  "markdown_url": "https://eolwatch.dev/items/azure-monitor-container-insights-legacy-authentication-retirement.md",
  "json_url": "https://eolwatch.dev/items/azure-monitor-container-insights-legacy-authentication-retirement.json",
  "estate_check": null,
  "source_note": null
}