{
  "slug": "azure-functions-python-3-10-end-of-support",
  "title": "Azure Functions: Python 3.10 end of support",
  "summary": "End of support date for Python 3.10 on Azure Functions: 1 Oct 2026. Apps keep running after that date but stop receiving security updates, performance optimizations and customer service.",
  "cloud": "azure",
  "service": "Azure Functions",
  "service_slug": "functions",
  "category": "runtime",
  "type": "end_of_support",
  "announced_date": "2026-01-28",
  "effective_date": "2026-10-01",
  "effective_precision": "day",
  "impact": "Support for Python 3.10 in Azure Functions ends on 1 Oct 2026, in alignment with the end of community support. Apps hosted on Functions continue to run, but security updates and performance optimizations are no longer available. Microsoft no longer provides customer service for Python 3.10.",
  "migration_path": "By the end of support date, upgrade function apps to Python 3.13 following the steps in [Update the stack configuration](https://learn.microsoft.com/azure/azure-functions/update-language-versions?tabs=azure-portal%2Clinux&pivots=programming-language-python#update-the-stack-configuration). The support policy is described in [Azure Functions stack version support](https://learn.microsoft.com/azure/azure-functions/language-support-policy).",
  "replacement": "Python 3.13",
  "affected_versions": [
    "3.10"
  ],
  "source_url": "https://azure.microsoft.com/updates?id=545771",
  "extra_source_urls": [
    "https://learn.microsoft.com/azure/azure-functions/language-support-policy",
    "https://learn.microsoft.com/azure/azure-functions/update-language-versions?tabs=azure-portal%2Clinux&pivots=programming-language-python#update-the-stack-configuration"
  ],
  "vendor_ref": "545771",
  "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-functions-python-3-10-end-of-support",
  "short_url": "https://eolwatch.dev/i/1k",
  "markdown_url": "https://eolwatch.dev/items/azure-functions-python-3-10-end-of-support.md",
  "json_url": "https://eolwatch.dev/items/azure-functions-python-3-10-end-of-support.json",
  "estate_check": {
    "resource_types": [
      "microsoft.web/sites",
      "azurerm_linux_function_app"
    ],
    "fields": [
      "linuxfxversion",
      "kind",
      "site_config.application_stack.python_version"
    ],
    "inputs": [
      "Azure Resource Graph export (CSV or JSON)",
      "Terraform state or plan (JSON)",
      "ARM template"
    ]
  }
}