1,362 questions with Azure Application Gateway tags

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Azure App Gateway / WEC for Entra Joined endpoints

Hello, We currently have WEC/WEF configured on domain joined endpoints using Kerberos Auth. We're moving to Entra joined only devices so we've been looking at using certificates to Auth over https and having an Azure App Gateway to manage the…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-05-06T16:01:33.89+00:00
Hardwick, Lewis 20 Reputation points
commented 2026-05-08T16:16:51.5366667+00:00
Praveen Bandaru 11,555 Reputation points Microsoft External Staff Moderator
2 answers

Intermittent 502 from Application Gateway to ACA backends despite Healthy backend pool, no ACA ingress/app logs

Hello, We experienced an intermittent outage where Azure Application Gateway returned 502 errors for traffic routed to Azure Container Apps backends. Setup Azure Application Gateway in East US 2 Backend targets are Azure Container Apps FQDNs Public…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-05-07T17:35:35.52+00:00
Socotec Admin Xian Zhang 0 Reputation points
answered 2026-05-07T19:17:22.29+00:00
Vallepu Venkateswarlu 9,160 Reputation points Microsoft External Staff Moderator
3 answers

App GW IP exhaust issue

We have a dedicated /27 subnet for application gateway. We have already build 8 App Gateways in this. Ea h App GW has 1 front end IP, min instance count :1 and max instance count: 2 When we are trying to provision 9th App Gateway then we are facing IP…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-05-04T11:28:32.6266667+00:00
Kumar, Jitendra 0 Reputation points
edited an answer 2026-05-06T18:22:24.71+00:00
Ravi Varma Mudduluru 11,475 Reputation points Microsoft External Staff Moderator
3 answers

Private Application Gateway V2 with private IP only does not respect EnableApplicationGatewayNetworkIsolation

Hi, I want to set up an Application Gateway Standard_v2 for use as an Application Gateway Ingress Controller (AGIC) with an AKS cluster in the same region, resource group and subscription. The application gateway will be created in a dedicated empty…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2023-05-19T10:41:50.0433333+00:00
Jonas Slotte 0 Reputation points
answered 2026-05-05T14:23:11.31+00:00
Debarghya 0 Reputation points Microsoft Employee
1 answer

Azure Application Gateway for Containers - Availability in CN

Dears, I can see that Azure Application Gateway for Containers is available in the Azure CN (21Vianet) portal. But this is not listed as available region in the documentation:…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2025-01-02T15:19:57.77+00:00
Paul Henke 0 Reputation points
commented 2026-05-04T09:55:45.9466667+00:00
Salvatore Caratozzolo 0 Reputation points
2 answers

approuting-istio: support internal load balancer with dedicated subnet annotation

We are migrating from the NGINX app routing add-on (internal LB) to approuting-istio. Our ingress is private, bound to a dedicated subnet via service.beta.kubernetes.io/azure-load-balancer-internal: "true" and…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-29T15:41:34.7333333+00:00
Gerardo Cipriano 0 Reputation points
commented 2026-05-04T09:11:41.83+00:00
Himanshu Shekhar 5,900 Reputation points Microsoft External Staff Moderator
1 answer

unable to create Application Gateway in UAE Central & UAE NORTH

We are deploying a production site and need to increase the Application Gateway quota. Currently unable to create Application Gateway in UAE Central & UAE NORTH. Also facing availability issues in UAE North. Requesting quota increase in UAE Central…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-05-01T12:28:11.29+00:00
sameer mohammed 0 Reputation points
answered 2026-05-01T13:26:47.9966667+00:00
Venkatesan S 8,130 Reputation points Microsoft External Staff Moderator
1 answer

We are seeing an issue with intermittent connectivity from Application Gateway to our backend VMSS

We are seeing intermittent connectivity between application gateway and our backend VMSS. It will rotate through being healthy and unhealthy

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-24T12:59:20.51+00:00
Keith Sturkie 0 Reputation points
commented 2026-04-30T18:34:51.4733333+00:00
Ganesh Patapati 11,915 Reputation points Microsoft External Staff Moderator
2 answers One of the answers was accepted by the question author.

Unable to provision Application Gateway for Containers

I am trying to deploy Application Gateway for Containers (AGC) in Azure (West Europe), both via Terraform and via the Azure Portal, but I consistently run into an error during provisioning. Scenario AKS cluster already exists and is properly configured…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-29T14:28:04.7+00:00
Bart Vreeken 25 Reputation points
answered 2026-04-30T07:23:13.6433333+00:00
Alex Burlachenko 20,825 Reputation points MVP Volunteer Moderator
1 answer One of the answers was accepted by the question author.

High BackEnd Connection Timeouts on Application Gateway for Containers

For our Websocket applications which are fronted by Application Gateway for Containers we are seeing exteremely high number values recorded in the Backend Connection Timeouts metric . For the non Websocket applications using the same AGFC frontend the…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-23T13:05:56.97+00:00
dfennessy 20 Reputation points
accepted 2026-04-27T15:36:13.4466667+00:00
dfennessy 20 Reputation points
1 answer One of the answers was accepted by the question author.

Application Gateway for Containers (AGC) subnet association fails with InternalServerError in japaneast — same steps succeed in eastus

Summary azurerm_application_load_balancer_subnet_association / az network alb association create / ALB Controller managed-mode association creation all fail with a generic InternalServerError in Japan East. Identical commands against East US succeed on…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-21T04:46:58.8466667+00:00
Akira Kawakami 20 Reputation points
accepted 2026-04-25T02:33:02.1+00:00
Akira Kawakami 20 Reputation points
1 answer One of the answers was accepted by the question author.

Azure Application Gateway v2 (WAF_v2) exposes dnsmasq as open recursive DNS resolver on port 53/UDP — NSG rule has no effect

Problem My Azure Application Gateway WAF_v2 is reachable on port 53/UDP from the public internet and acts as a fully recursive open DNS resolver. This was discovered during a security penetration test. Verification commands (run against the AppGW public…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-21T12:45:15.5033333+00:00
Grzegorz Jazurek 20 Reputation points
accepted 2026-04-24T19:57:57.17+00:00
Grzegorz Jazurek 20 Reputation points
1 answer One of the answers was accepted by the question author.

Azure Portal blocks Application Gateway Key Vault certificate selection when Key Vault uses RBAC. But bypass validation if created dummy access policy

We are seeing a portal-specific issue with Azure Application Gateway and Azure Key Vault integration. Scenario - Application Gateway uses a user-assigned managed identity - Key Vault is configured with Azure RBAC permission model - The managed identity…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-21T08:19:25.7166667+00:00
Sanket Ghate 20 Reputation points
accepted 2026-04-24T08:38:25.7766667+00:00
Sanket Ghate 20 Reputation points
3 answers

Application Gateway 502 Bad Gateway error on some URL's of backend server

We are facing HTTP 502 Bad Gateway responses on some URL's of a backend server, the backend server itself shows as healthy as indicated by the health probe and the website on the server is reachable through the Applcation Gateway only some specific URL's…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-22T10:27:03.99+00:00
Rwrd1 0 Reputation points
answered 2026-04-23T14:58:44.44+00:00
VIVEK DWIVEDI 270 Reputation points Microsoft Employee
1 answer

Application Gateway for Containers - Gateway API version

Hi, When will Application Gateway for Containers (AGC) come with Gateway API v1.5 supprt so we can use listernersets? The version that is still used in the latest alb-controller release is 1.2.1 which by now is pretty ancient.

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-23T10:49:27.6466667+00:00
Jonas 0 Reputation points
answered 2026-04-23T11:15:30.28+00:00
Ravi Varma Mudduluru 11,475 Reputation points Microsoft External Staff Moderator
2 answers

Azure Application Gateway Listener Certificate Renewal Failed to Update

I am trying to update the Azure Application Gateway listener certificate from Key Vault, but I am encountering an error during the update. I also tried deleting the existing listener certificate and creating a new one, but it is still picking up the old…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-14T09:14:04.34+00:00
Venkata Emani 0 Reputation points
answered 2026-04-20T16:07:38.01+00:00
Ganesh Patapati 11,915 Reputation points Microsoft External Staff Moderator
1 answer

App GW not receiving real client IP

Hello, Below is the flow configured in our setup. Internet Client  -> Azure Load Balancer (Public IP terminates here) -> Checkpoint Firewall (SNAT+DNAT) -> Application Gateway (Private Listener) With this setup application works well. (On…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-02-06T13:36:42.0533333+00:00
Rajesh Cv 5 Reputation points
commented 2026-04-17T16:19:07.4733333+00:00
Rajesh Cv 5 Reputation points
2 answers One of the answers was accepted by the question author.

Could you please fix the vulnerabilities in the ALB controller? Thanks.

We are currently using Azure Application Gateway for Containers. However, there are some high‑severity vulnerabilities in the latest version of the ALB controller (1.9.16). Could you please help check and upgrade to address these vulnerabilities? Thank…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-15T08:12:11.01+00:00
Hans Wong 65 Reputation points Microsoft Employee
accepted 2026-04-15T14:25:45.3766667+00:00
Hans Wong 65 Reputation points Microsoft Employee
2 answers

How the Application Gateway deals with pending requests

The documentation states that when a backend instance becomes unhealthy, Application Gateway stops forwarding requests to that instance. However, what happens to requests that were already sent while the backend was still healthy? Does Application…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-13T19:48:55.86+00:00
Cássio Rodrigues 0 Reputation points
answered 2026-04-13T20:06:02.0066667+00:00
Vallepu Venkateswarlu 9,160 Reputation points Microsoft External Staff Moderator
3 answers

Configure Azure AppGW with Path-based type

Hello community, We are planning to configure AppGW for new service which will be expose from AKS on the existing one AppGW. Existing domain : Removed PII AppGW backend :Removed PII Redirect condition : http -> redirect to https Now, we have to…

Azure Application Gateway
Azure Application Gateway

An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.

1,362 questions
asked 2026-04-03T09:09:12.21+00:00
Hanh Trinh 91 Reputation points
answered 2026-04-13T18:47:26.36+00:00
Ganesh Patapati 11,915 Reputation points Microsoft External Staff Moderator