---
slug: "azure-functions-runtime-v3-linux-consumption-retirement"
title: "Azure Functions: runtime v3 on Linux Consumption retirement"
summary: "After 30 Sep 2026, function apps using Azure Functions runtime v3 on the Linux Consumption plan no longer start or process executions."
cloud: "azure"
service: "Azure Functions"
service_slug: "functions"
category: "feature"
type: "retirement"
announced_date: "2026-04-17"
effective_date: "2026-09-30"
effective_precision: "day"
replacement: "Azure Functions runtime v4"
affected_versions: ["3.x"]
source_url: "https://azure.microsoft.com/updates?id=559311"
extra_source_urls: ["https://learn.microsoft.com/en-us/azure/azure-functions/migrate-version-3-version-4","https://learn.microsoft.com/en-us/azure/azure-functions/migration/migrate-plan-consumption-to-flex"]
vendor_ref: "559311"
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-runtime-v3-linux-consumption-retirement"
short_url: "https://eolwatch.dev/i/z"
markdown_url: "https://eolwatch.dev/items/azure-functions-runtime-v3-linux-consumption-retirement.md"
json_url: "https://eolwatch.dev/items/azure-functions-runtime-v3-linux-consumption-retirement.json"
---

# Azure Functions: runtime v3 on Linux Consumption retirement

After 30 Sep 2026, function apps using Azure Functions runtime v3 on the Linux Consumption plan no longer start or process executions.

- Effective date: 30 Sep 2026
- Cloud: [Azure](https://eolwatch.dev/cloud/azure.md)
- Service: [Azure Functions](https://eolwatch.dev/services/azure/functions.md)
- Type: Retirement
- Category: [Feature](https://eolwatch.dev/categories/features.md)
- Affected versions: 3.x
- Replacement: Azure Functions runtime v4
- Announced: 17 Apr 2026
- Official source: [azure.microsoft.com](https://azure.microsoft.com/updates?id=559311)
- Last checked: 12 Nov 2026

## What breaks

Azure Functions runtime v3 was retired on December 13, 2022, and Azure enforces that retirement for Linux Consumption function apps still on runtime v3. After 30 Sep 2026, function apps using runtime v3 on Linux Consumption no longer start or process executions. Existing deployments in this configuration stop functioning.

## Who is affected

### Affected versions

- `3.x`

## What to do

1. Migrate affected apps to Azure Functions runtime v4 before the enforcement date. See [Migrate apps from Azure Functions version 3.x to version 4.x](https://learn.microsoft.com/en-us/azure/azure-functions/migrate-version-3-version-4).
2. The Linux Consumption plan has its own retirement date in September 2028, so Microsoft encourages migrating to Azure Functions Flex Consumption, which supports runtime v4. See [Migrate Azure Functions Linux Consumption plan apps to the Flex Consumption plan](https://learn.microsoft.com/en-us/azure/azure-functions/migration/migrate-plan-consumption-to-flex).

## Replacement

Azure Functions runtime v4

## Sources

- [Official source](https://azure.microsoft.com/updates?id=559311) (azure.microsoft.com, Official)
- [Additional source](https://learn.microsoft.com/en-us/azure/azure-functions/migrate-version-3-version-4) (learn.microsoft.com, Official)
- [Additional source](https://learn.microsoft.com/en-us/azure/azure-functions/migration/migrate-plan-consumption-to-flex) (learn.microsoft.com, Official)

Last checked against the first source in this list on 12 Nov 2026.

Page: https://eolwatch.dev/items/azure-functions-runtime-v3-linux-consumption-retirement | JSON: https://eolwatch.dev/items/azure-functions-runtime-v3-linux-consumption-retirement.json

The text on this page is drafted with AI assistance from the vendor's text, checked against the official source and approved by a person before it is published.