---
slug: "azure-application-insights-api-key-query-access-retirement"
title: "Azure Monitor Application Insights: API key query access retirement"
summary: "Retirement date for API keys used to query Application Insights: 31 Mar 2027. Querying an Application Insights resource after that date requires Microsoft Entra authentication."
cloud: "azure"
service: "Azure Monitor Application Insights"
service_slug: "application-insights"
category: "api_sdk"
type: "retirement"
announced_date: "2023-05-15"
effective_date: "2027-03-31"
effective_precision: "day"
replacement: "Microsoft Entra ID authentication"
affected_versions: []
source_url: "https://azure.microsoft.com/updates?id=transition-to-azure-ad-to-query-data-from-azure-monitor-application-insights-by-31-march-2026"
extra_source_urls: ["https://learn.microsoft.com/en-us/azure/azure-monitor/app/azure-ad-authentication?tabs=aspnetcore"]
vendor_ref: "transition-to-azure-ad-to-query-data-from-azure-monitor-application-insights-by-31-march-2026"
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-application-insights-api-key-query-access-retirement"
short_url: "https://eolwatch.dev/i/5a"
markdown_url: "https://eolwatch.dev/items/azure-application-insights-api-key-query-access-retirement.md"
json_url: "https://eolwatch.dev/items/azure-application-insights-api-key-query-access-retirement.json"
---

# Azure Monitor Application Insights: API key query access retirement

Retirement date for API keys used to query Application Insights: 31 Mar 2027. Querying an Application Insights resource after that date requires Microsoft Entra authentication.

- Effective date: 31 Mar 2027
- Cloud: [Azure](https://eolwatch.dev/cloud/azure.md)
- Service: [Azure Monitor Application Insights](https://eolwatch.dev/services/azure/application-insights.md)
- Type: Retirement
- Category: [API or SDK](https://eolwatch.dev/categories/apis-sdks.md)
- Replacement: Microsoft Entra ID authentication
- Announced: 15 May 2023
- Official source: [azure.microsoft.com](https://azure.microsoft.com/updates?id=transition-to-azure-ad-to-query-data-from-azure-monitor-application-insights-by-31-march-2026)
- Last checked: 12 Nov 2026

## What breaks

API keys used to query Application Insights are retired on the retirement date. Continuing to query an Application Insights resource requires a switch to Microsoft Entra authentication. Microsoft states that it extended the retirement date.

## What to do

Switch to [Microsoft Entra authentication for Application Insights](https://learn.microsoft.com/en-us/azure/azure-monitor/app/azure-ad-authentication?tabs=aspnetcore) by 31 Mar 2027 to keep querying the resource. Microsoft points to [Microsoft Q&A](https://aka.ms/livemetricapikey-qna) for questions and, with a support plan, a [support request](https://ms.portal.azure.com/#blade/Microsoft_Azure_Support/HelpAndSupportBlade/overview) with service type Application Insights.

## Replacement

Microsoft Entra ID authentication

## Sources

- [Official source](https://azure.microsoft.com/updates?id=transition-to-azure-ad-to-query-data-from-azure-monitor-application-insights-by-31-march-2026) (azure.microsoft.com, Official)
- [Additional source](https://learn.microsoft.com/en-us/azure/azure-monitor/app/azure-ad-authentication?tabs=aspnetcore) (learn.microsoft.com, Official)

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

Page: https://eolwatch.dev/items/azure-application-insights-api-key-query-access-retirement | JSON: https://eolwatch.dev/items/azure-application-insights-api-key-query-access-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.