Azure functions 503 service unavailable Connection status: Disconnected. Misconfigured Azure App Service or May 26, 2021 · Describe the bug HttpTrigger AzureFunction failing with 503 Service Unavailable after 230 seconds. O'Donnell 3,743 12 36 67 You can refer to Use the Kudu Debug Console, Why the Kudu site for my app service is showing 503 Service Unavailable and Started getting deployment failures with 503 – Ecstasy Oct 29, 2021 at 5:39 You can also open an issue on azure-pipelines-tasks Aug 10, 2020 · During development/debugging, the Azure Function works as expected; however, when running on a scheduled trigger, it fails intermittently with the error: The service is unavailable. Creating a new function in Portal and failing without any other modifications is a bit worrying. Incorrect environment variables (e. net/ however it returns a 503-service unavailable. The rest give Service Unavailable. Sep 17, 2024 · If you try make an HTTP request, you get 503 Service Unavailable response. I have an existing Azure function, . For longer processing times, use Azure Durable Functions async pattern. net with https://<function_name>. All the remaining apps respond with the same status code. Please note: This will not work for Consumption Plan but since we are using App Service Plan it will work. Instead anyone calling my function was getting code 502/503 and that too after a long wait of 5 to 10 seconds. My… Mar 15, 2024 · Azure App Service is a service used to create and deploy scalable, mission-critical web apps. Or your specific containerized Jan 8, 2025 · The services impacted include Azure Databricks, Azure Container Apps, Azure Function Apps, Azure App Service, SQL Managed Instances, Azure Data Factory, Azure Container Instances, PowerBI, VMSS, PostgreSQL flexible servers etc. Sometimes functions app gets down and started throwing 503/502 and after restarting 2-3 times it starts working. 9. After deploying a function on October 9th, it was running smoothly, but as of the morning of October 10th, I started encountering a "503 Service Unavailable" error, and the function became inaccessible. '. . Service Health shows no issue, I've double checked Feb 10, 2024 · Go to Kudu service UI for your app. , 230 Seconds available in this MS Doc. Oct 23, 2021 · To debug this issue, refer this azure-app-service-troubleshoot-http-502-http-503 MSFT documentation and follow the troubleshooting steps provided. When I run it, the task to deploy the container fails with message 2020-10-23T16:12:20. Net Version That had no effect. Knowing that the service principal has access to all workspaces. Feb 10, 2024 · Go to Kudu service UI for your app. Learn how to troubleshoot common errors when you deploy or run a Node. e. WAS, however, able to push an older net7 version of the azure function, and everything worked just fine. When you are running the function and If your function is returning the 503 Service Unavailable, then check the Request-Response time because there is a time limit for request processing in Azure Function Http Request i. What are the po Aug 13, 2019 · The Azure function is reporting Status: 503 Service Unavailable when trying to run it. The HTTP status code always returns 200 regardless of what… Mar 11, 2025 · One of our Azure Static Web Apps is intermittently returning a 503 error code. Suddenly (2022-05-21 at around 10AM GMT) the API part stopped working, returning 503. Jun 14, 2021 · I have a workflow where certain events trigger a logic app. The code is implemented like this for working with blob: from azure. net/ I get this 3 errors randomly: 503 The service Jul 10, 2022 · I've read that the Consumption Plan supports up until 100 Function Apps, however, I noticed during my testing that when I try to trigger 100 functions sequentially (one per function app), at around the app number 60 it responds with a 503 Service Unavailable status code. We facing this for some time and some times all fucntionalites works fine. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… One of our Azure Functions (Http Trigger) is returning 503 service unavailable to us intermittently, after migrating from v3 to v4 when being called by our service bus trigger function. net https://dn42uk. After deploying the ASP. 10 function (http_trigger) for the same on VS Code. 80 (did not try other versions), publishing code to a Linux Function App will cause the command to keep retrying even though publishing the code failed with 503 Service Unavailable: Dec 12, 2024 · 0. azurewebsites. Troubleshoot error: Azure Functions Runtime is unreachable Sep 15, 2022 · we have a setup where we deploy a staging slot whereafter swapping with production. worked fine until 4 hours ago . ". The original app works fine. We are unable to diagnose the exact root cause of t Jul 12, 2023 · We have an Azure Function using . But from the company network, it throws a 503 ServiceUnavailable status code. Kindly select "Accept answer" if this help. You also mentioned that “Sync Web Apps Function Triggers failed,” which can prevent functions from executing. Dec 15, 2024 · To troubleshoot host-related problems, check the "Diagnose and solve problems" section in the Azure Portal under the Function app. The application was functioning half an hour ago but is not responding with 503 now. We also tried plans B2 and P1v3, to rule out memory issues, but the same issue arises. What could be May 30, 2024 · Logic App (standard) deployment fails intermittently - kudu service unavailable 503 #2488 Open Chris-Filiatrault opened on May 30, 2024 · edited by Chris-Filiatrault HTTP“502 错误的网关”和“503 服务不可用”是打开 Azure 应用服务 中托管的应用时可以获取的常见错误。 本文帮助你排查这些错误。 如果需要更多帮助，可以联系 Azure 社区支持 部门中的 Azure 专家。 或者，可以在 Azure 支持站点 上使用资源。 这些错误的原因通常是应用程序级问题，例如： 请求耗费 Aug 29, 2024 · Azure 503エラー（Service Unavailable）の原因と対処法を詳説。サーバー過負荷やメンテナンス時の一時的なサービス停止の理解と、適切な対応策を提供します。 Jan 20, 2025 · Learn how to diagnose and fix Azure Cosmos DB for NoSQL service request time out exceptions. We really want to be able to activate the "always-on" configuration setting, to get rid of warm up times. The application runs fine locally but encounters issues when deployed to Azure. 0. Use the "Function app down or reporting" detector to view detailed diagnostics about the app and infrastructure. NET Worker app to Linux App Service. When I deploy t Apr 19, 2024 · I have created a container based azure function app (linux) with an app service plan attached. Service Temporarily Unavailable (CODE: 503) if I try to deploy to a function app without vnet integration it works fine. I created a python 3. Oct 28, 2021 · asked Oct 28, 2021 at 11:50 Connell. Feb 14, 2023 · WEBSITE_RUN_FROM_PACKAGE is recommended way for deployment of Function Apps if you want to deploy using ZIP deploy. The KV and SA have a NIC and Private Endpoints - the SA as a Private Endpoint for blob, file, queue, and table. May 31, 2022 · I have a Azure Static Web App (Free plan) deployed in west-europe. All of them have "Running" status, but I cannot deploy new releases, I receive code 503 "Service Unavailable", the deploy does not complete. As I mentioned in my original post, I am running my applications within a corporate network with strict firewall restrictions. Ask: Why does App Service rely on SAN when we already have the domain name? Jul 22, 2025 · Learn how to diagnose and fix Azure Cosmos DB service unavailable exceptions. Attempted to publish directly from the Visual Studio UI ( as discussed above). If there are any issues with the Azure Functions host, you will see an alert there. So I would check the Quotas section within your App Service Plan. I tried restarting the function app and I am trying to publish a zip deployment but it fails. I use Azure API management, and when testing the endpoint it smply returns "503 Site Unavailable" with body stating "The service is unavailable. B1 to be specific. Switch to the New Kudu UI by adding the ’newui’ to the URL. Oct 24, 2022 · One of our Azure Functions (Http Trigger) is returning 503 service unavailable to us intermittently, after migrating from v3 to v4 when being called by our service bus trigger function. But when I try to run this one, I Oct 24, 2022 · One of our Azure Functions (Http Trigger) is returning 503 service unavailable to us intermittently, after migrating from v3 to v4 when being called by our service bus trigger function. If this ZIP file is as large as 20MB, the following happens: The flow receives a 503 ServiceUnavailable message almost immediately After… Mar 28, 2023 · Now it says that the Azure Function Runtime is unreachable, because the service is unavailable throwing 503 error. I have… May 14, 2024 · I am deploy my simple React app as a code in azure app service . Is there something Oct 11, 2024 · Situation: I am currently using the Flex Consumption Plan, which is in preview for Azure Functions. Now after replacing codes in series 100 with either 200 / 400 /500 series , the code which i intend to return (200/400/500 series)are the ones being received by the caller Oct 23, 2021 · To debug this issue, refer this azure-app-service-troubleshoot-http-502-http-503 MSFT documentation and follow the troubleshooting steps provided. Jul 25, 2023 · Status: 503 (Service Unavailable) Content:"service_unavailable error_description:Service not available because the machine is not connected to Azure. However, I can't seem to find any debug logs/console logs to look into - so I am kinda looking with my eyes closed (It's not easy to debug that way). Nov 11, 2023 · Hello, I've noticed yesterday that my Azure functions from region North Europe stopped working. g. blob import BlobC On azure-cli 2. Jan 3, 2024 · I am trying to call my webapp from Azure function using timer trigger, for which I am using DefaultAzureCredential. In python I sent a post request to the sync triggers endpoint for the app. I have… Jun 8, 2021 · I'm trying to deploy an azure function using the following command: az functionapp deployment source config-zip -g "resourcegroup" -n "function-app" --src MyFunction. I am working on an infrastructure as code deployment involving among other things a function app (Azure Functions). NET 6, hosted on Linux, it was working up until today. Jan 27, 2023 · I tried to reproduce the steps that are given in my local system and followed the below steps. After connecting the Azure SQL DB deploy the ASP. Dec 6, 2021 · API functions all returning 503 service unavailable (Function host is not running). 503 error Logic app design: logic app Sep 4, 2021 · Hello, First I need to say I'm new to Azure function app and this maybe a simple issue. There is a large number of datasets related to each workspace. My… Mar 26, 2019 · 14 I think 503 could mean that you reached a quota and Azure now respond with a 503 for requests. Troubleshoot Python function apps in Azure Functions Automate Azure Functions deployments with Azure Pipelines - Training Implement a CI/CD pipeline with Azure Pipelines for Azure Functions. Firstly, it's possible that the issue is related to Azure maintenance, as you mentioned. Dec 13, 2020 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. The most common causes for this behavior are: Feb 28, 2022 · Series 100 are the codes that i was trying to return from my function. Does anyone have an idea of what could be the issue with this or put me on the right track? Big Thanks! Jun 28, 2018 · I have 7 web apps connected to a service plan. May 19, 2023 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. scm. Validating deployment package for functions app before Zip Deploy May 23, 2025 · Hi, I'm currently encounter the 503 error when triggering HTTP an Azure function, the function worked very well few days ago but as for now i encounter this annoying error. now we just get &quot;The service is unavailable. NET core web in Visual studio and added a sample Azure SQL DB with the connect services s below. Sometimes, we get that the "Azure Functions runtime is unavailable", if we go into the Functions blade in the portal. We're w Aug 20, 2021 · Hello; I created an azure function that connects to Power BI service, retrieves logs and saves data in a Storage blob. It mentions load-balancer being an issue and the http sub status code according to the table provided by Bryan Trach says ,,Exception in rewrite provider (likely caused by SQL)". It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… Jul 23, 2020 · Error: Service Temporarily Unavailable (CODE: 503)This may be due to the server being overloaded or down for maintenance. Mar 8, 2023 · Describe the bug Starting today all my production Azure Static Web App services have been returning "The service is unavailable" responses. Jul 27, 2022 · We have been running a couple of Azure Functions in various subscriptions, and every once in a while (about once a week), the entire Azure Function goes down and reports "The service is unavailable. May 22, 2025 · Hi, I'm currently encounter the 503 error when triggering HTTP an Azure function, the function worked very well few days ago but as for now i encounter this annoying error. Jun 7, 2021 · This article lists some common issues related to Azure Web App service deployments from Azure DevOps Services and provides steps to resolve or debug these issues. Our internal team mitigated this issue, which is why your database is now back online. There were no changes made to the app. Jul 1, 2025 · Hi , Thanks for reaching out to Microsoft Q&A. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… I have a workflow where certain events trigger a logic app. co/swCXkcj Below is my log stream for this : ibb. I hope this has been helpful. Whenever I Feb 7, 2019 · I have created simple Azure Function and I'm trying to call it in a Logic App. Now it returns "The service is unavailable". If you can share: Hosting plan (Consumption, Premium, Dedicated) Type of trigger (HTTP, Timer, etc. The Function App overview page looks fine (Status: Running and all functions are "Enabled"). NET core to app service as below. ( Attached the code) … May 22, 2025 · This typically indicates that the service is temporarily unavailable. Click Stop and then Start. Troubleshoot Azure Web App tasks and deployment issues - Azure DevOps Mar 7, 2018 · I have a Function App in azure and when I hit the URL of the function app it says "Function host is not running. On Windows hosting it works fine. Another common cause of 503 errors is when a function takes too long to respond. This allowed the service to validate the domain even without public DNS exposure. Refer this MS Doc. In this case When trying to deploy an Azure function App to a function app with vnet integration gives the error after a whopping 20 minutes of trying hard by Microsoft code: Failed to deploy web package to App Service. Mar 21, 2019 · When I try to create a Linux Function App (Consumption Plan) via an ARM template and then subsequently update it via the Azure Function (Preview) v1. NET 6 - Linux from the Portal and it returns the same message. Fix HTTP 502 and HTTP 503 Errors - Azure App Service Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. We tried stopping and restarting the function, and checked the AzureWebJobsStorage setting (storage account is still there, key is still correct). … May 29, 2025 · Here are Suggested Immediate Steps Check Azure Portal > Function App > App Insights > Failures – to see if requests are hitting the function. Aug 10, 2022 · I am trying to run an Azure Function App, that we already have running in a different resource group / service plan / storage account. The request includes a ZIP file. May 22, 2025 · This typically indicates that the service is temporarily unavailable. Publish indicates success, but still see the "503 Service Unavailable". I am not sure of the reason for this, but it happened on production resource group and caused major impact on business. Only 2 of them are able to access their scm. Since the function was working fine recently, I recommend starting with a few quick checks, restart the Function App from the Azure Portal, and verify if there are any ongoing outages in your region using Azure Service Health. Is there something Apr 9, 2025 · We are facing the 503 and timeout issue when trying to invoke azure functions apps. This used to work till last week with out functionTimeout setting, take ~20mins to complete reques May 22, 2025 · This typically indicates that the service is temporarily unavailable. Oct 20, 2021 · While connecting from my code outside of the company network, the Cosmos DB connection works just fine. I have created a ASP. Exception: cannot import name 'BlobSource' from 'azure. &quot; and the deploy script says : Error: Failed to fetch Kudu App Settings. The healthcheck fires, if the status is set to unhealthy, we return a an instance of ServiceUnavailableObjectResult. Since it affects all invocation methods, and you have ruled out cold starts, it is probably: A regional outage or service degradation in East US. Diagnose and fix various causes for forbidden exceptions that can occur when working with Azure Cosmos DB for NoSQL. Hi, I have a setup, where I have 1 web app and 2 function apps (all sharing a app service plan 'B1'). I encounter a 503 Status which will be retried for a very log time: May 26, 2023 · In this article, you will find the steps on how to troubleshoot HTTP “502 Bad Gateway” error or a HTTP “503 Service unavailable” error. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… Jul 13, 2019 · This morning, I'm getting "503 Service Unavailable" response from my API endpoints running in consumption plan. And the logic app would call an Azure Durable Function (Http trigger). Aug 22, 2024 · I found a solution to my 503 Service Unavailable issues. ibb. One of our Azure Functions (Http Trigger) is returning 503 service unavailable to us intermittently, after migrating from v3 to v4 when being called by our service bus trigger function. Comment Use comments to ask for clarification, additional information, or improvements to the question. May 27, 2021 · Azure App Service is a service used to create and deploy scalable, mission-critical web apps. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… I have a Azure DevOps release pipeline which deploy a container to app service in Azure. They all use very similar settings, as they we Apr 1, 2025 · Issue: Azure CosmosDB returning HTTP 503 Service Unavailable in North Europe region. Most of my attempts result in all requests to Kudu returning 503 Service Unavailable, one time it actually managed to start Oct 21, 2022 · One of our Azure Functions (Http Trigger) is returning 503 service unavailable to us intermittently, after migrating from v3 to v4 when being called by our service bus trigger function. In my situation, running in Gateway mode (rather than the default Direct mode) is the best choice because it uses the standard HTTPS port and a single DNS endpoint. Using default. net sites. #652 Oct 24, 2023 · Fix HTTP 502 and HTTP 503 Errors - Azure App Service Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. Jun 1, 2021 · Call to provided Azure function 'function name' failed with status-'ServiceUnavailable' and message - 'The service is unavailable. The 503 error means that there is a problem with the Function gateway right ? Jun 23, 2025 · Webサイトを運営していると、突然「503 Service Temporarily Unavailable」というエラーメッセージが表示されることがあります。 このエラーは、ユーザーがアクセスできない状態を示すため、サイト運営者にとって深刻な問題となります。 本記事では、503エラーの原因から具体的な対処法まで、事例を Aug 23, 2024 · I have an azure function deployed which is giving this exception as follows: [![Unable to reload azure. Give a try with deleting your deployed web app (if there was), created a new build/release to deploy it. Response code was 503 with content The service is unavailable : Sep 10, 2025 · Workaround: We successfully used an AD CA certificate with a Standard App Service by updating the Subject Alternative Name (SAN) field to include the custom domain. Possible ways: Backend Flask app not running or crashing in Azure. This can be due to several reasons, including issues with the Azure Function gateway, scaling problems, or even service outages. May 22, 2025 · Since the function was working fine recently, I recommend starting with a few quick checks, restart the Function App from the Azure Portal, and verify if there are any ongoing outages in your region using Azure Service Health. The 503 error means that there is a problem with the Function gateway right ? May 26, 2025 · Since the function was working fine recently, I recommend starting with a few quick checks, restart the Function App from the Azure Portal, and verify if there are any ongoing outages in your region using Azure Service Health. NET 8 in the configuration. When I try to deploy a function app I does not work properly. js app in Azure Functions. Apr 10, 2025 · I have created a resource group with and App Service, Function App, App Insights, Key Vault, and Storage Account for the Function App. Troubleshoot error: Azure Functions Runtime is unreachable May 2, 2022 · 3 I'm having a problem with my 4 webapps on Azure. net https://dn42br. I'm also getting "Function host is not running" message when I hit the azurewebsites. … Aug 12, 2024 · I am trying to run an azure function app: https://az204vkfunapp. Resolution: As mentioned earlier, your databases went into an unavailable state due to the North Europe region outage. net core, and I've noticed that sometimes, after deploying the function using VS2019 (zip deploy), I start getting 503 Service Unavailable errors with this message: Function host is not running. Looking at the monitoring on my service told me the processor was never exceeding 6% of usage, so it couldn't be a lack of resource causing these intermittent 503 errors. You can check the Azure status page to see if there are any known issues affecting your region. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… Jan 8, 2025 · Hi Prasant Kumar Das Welcome to the Microsoft Q&A Platform! The 503 and 504 errors in Azure-hosted applications generally indicate problems with connectivity, configuration, or service dependencies. functions. Net Core 7 that we've added a HealthCheck to. What I did: go to Azure Portal, navigate to affected function app. I am also experiencing issues with deployment to these SW Feb 13, 2020 · We are using MSI to access blob and KeyVault resources from our Azure Function, which is a Python Function running on a Linux Consumption plan. My Apps run successfully on Visual Studio, I was inspecting the available logs on Azure and found this: Nov 12, 2025 · At that time it started to return a "503 - Service Unavailable" error when trying to access the storage account through storage explorer, logic app connectors, or through the Azure Portal. " when accessing the Function-app via H Mar 31, 2025 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. Nov 20, 2023 · Also, changed the . The c I have a workflow where certain events trigger a logic app. Jan 25, 2020 · I have an http function that uses . If this connection fails, the app won't start. Jan 6, 2024 · Issue Summary: I am experiencing a 503 Service Unavailable error when deploying a FastAPI application on Azure App Service (Linux). Need assistance on how to debug the issue. Learn how to diagnose and fix Azure Cosmos DB service unavailable exceptions with the Java v4 SDK. Feb 10, 2024 · I tried to deploy the function multiple times but the error was still there. I went to troubleshoot the function and is reporting that the host if offline. Navigate to Apr 18, 2024 · Tried to create another azure functions under same group and region - still KUDU is unavailable and unable to deploy. Oct 20, 2023 · I am trying to deploy an Azure Function in python to a Function App, but I keep getting this error message in logs. , does the PUT route call a backend service?) I can give you even more targeted advice. Try scaling up/down to see if the issue resolve, looks like a server issue. 結論 原 HTTP "502 Bad Gateway" and "503 Service Unavailable" are common errors that you can get when you open an app that you host in Azure App Service. x on a consumption tier with a simple function that always returns a 503 after 30 seconds stating: Our services aren't available right now. After switching the service plan back to Y1, the function app functions as before. net. May 30, 2024 · Got service connection details for Azure App Service:'logicapp-dev' NOTE: Function app is VNet integrated. はじめに Cloud Functionsを使用したAPI実装での予期せぬ503エラーに遭遇し、思わぬ見落とし(無知)に時間を取られてしまったため、戒めとして原因特定までの過程と解決(回避)方法をまとめた。 ※コーディング内容などについては随時割愛。 1. We are unable to diagnose the exact root cause of t Aug 8, 2024 · You can check the status of the Azure Functions host in the Azure portal by going to the "Platform features" tab of your function app and selecting "Overview". Jul 7, 2020 · Did you see this Does Azure Functions throw 503 errors while app settings are being updated? Depending on how you are doing the swap it could be triggering a restart because the app settings are "changing" Jul 15, 2021 · I have unsuccessfully been trying for two days to deploy a Azure Functions . Just take your function url and replace https://<function_name>. * task, I get one of the following errors: Initially, for a while (10 minutes) after the function app is created, I get a 503 May 14, 2025 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. I have a function app to get csv file from blob and validate the url in a column and then write back the result to blob storage. When accessing SWA in the Azure Portal, it seems like all… May 31, 2022 · 0 Azure Functions Linux Hosting Plan - New Http Trigger Function Published Successfully and working good from our end: There are many reasons that cause 503 service unavailable in Azure Functions: Memory leak/issue from the code causing the backend server to return 503. co/McvJYKN I have a workflow where certain events trigger a logic app. Nov 6, 2021 · This is my web app: https://dn42usw. It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… Sep 30, 2024 · //here are some more </ItemGroup> </Project> When I try to fetch data from the Function App it now returns: 503 Service unavailable - Function host is not running. The Function App is also set to . I tried to create a brand new Azure function - . Aug 19, 2022 · Edit: I was able to find the 503 responses logged in one of our app services (picture below). 8516547Z ## [error]Err Jun 26, 2021 · I'm requesting a durable function (Azure function) from a Power Automate flow. co/X7VfSc5 I have implemented these two variables by reducing size from 2000 to 1800 , 1500 , 1000 It browse good for first 2 , 3 call afterwards it restarts and gives 503 service unavailable ibb. Deleting App Service Application settings. storage. ( Attached the code) … Jun 16, 2025 · This Service Unavailable issue occurs when the Function App requires a valid connection to a storage account to manage triggers and logs. zip --debug Azure App Service でホストされているアプリで発生するエラー "502 無効なゲートウェイ" と "503 サービス利用不可" のトラブルシューティングを行います。 Sep 27, 2022 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. Also check: Troubleshoot HTTP errors of "502 bad gateway" and "503 service unavailable" in Azure App Service Apr 9, 2025 · We are facing the 503 and timeout issue when trying to invoke azure functions apps. ) Logs from App Insights App code architecture (e. I have already enabled a system assigned managed identity for function app. Customers using resources with Private Endpoint NSG communicating with other services would also be impacted. I have a workflow where certain events trigger a logic app. But Logic App gives error 503 Service Unavaible. NET Core to app service I have changed some setting as below. This article helps you troubleshoot these errors. The portal indicated that both operations were completed successfully. Created test azure finction under same group… Jun 15, 2020 · An Azure service that provides a hybrid, multi-cloud management platform for APIs. Sep 4, 2021 · Hello, First I need to say I'm new to Azure function app and this maybe a simple issue. However when I tried googling for any kinds of solutions to this I got nothing. Data: ["WEBSITE_RUN_FROM_ZIP","WEBSITE_RUN_FROM_PACKAGE"] App Service Application settings are already present. Unfortunately, this did not work. We are unable to diagnose the exact root cause of t Aug 18, 2025 · Troubleshoot 502 Bad Gateway and 503 Service Unavailable errors in your app hosted in Azure App Service. Dec 11, 2017 · However, when I go to the app in my browser I get: "503 Service Temporarily Unavailable" Now, there are probably thousand things which can go wrong. Feb 25, 2023 · これが謎。 Azure ポータルからリソースを作成しようとするとこのようなことは発生しませんでした。 しかし、Terraform で azurerm_linux_function_app を使用し、 dotnet_version を指定しないでプロビジョニングすると、503 エラーが発生しました。 Jun 5, 2019 · We have a azure function app (App service plan) in which multiple http triggers are present. Jul 15, 2021 · Hello everyone 👋🏼, I am fighting a crazy behavior since few days. Created test azure finction under new group in different region - that KUDU works fine. The message “no healthy upstream” is typically returned when Azure's internal load balancer cannot route traffic to any healthy instances of your deployed model. May 22, 2025 · Since the function was working fine recently, I recommend starting with a few quick checks, restart the Function App from the Azure Portal, and verify if there are any ongoing outages in your region using Azure Service Health. Jul 22, 2022 · I have an Azure Function App running Python 3. net URL. Health checks for the container fail. Sep 4, 2021 · We have frequent and irregular 503 errors. Azure maintenance can cause temporary service disruptions, which may result in 503 Service Unavailable errors. I can see them all in the portal, but when I try to deploy my code for the Function app to my Function in the portal I get the following error: Sep 16, 2024 · If you try make an HTTP request, you get 503 Service Unavailable response. It's bizarre and I'm afraid I have no explanation for it, but simply redeploying the cloud service to Azure appears to have done the trick. " I am not sure where I have to check and what needs to be changed. I redeployed the function app yesterday to see if that fixes it but that seems to do nothing. After 6 attempts to synchronize triggers, the deployment failed with the error message Error: Encountered an error (ServiceUnavailable) from host runtime. Aug 20, 2021 · Hello; I created an azure function that connects to Power BI service, retrieves logs and saves data in a Storage blob. Nov 15, 2023 · Hey Mike - Thanks for the response. We are unable to diagnose the exact root cause of t Getting 503 when trying to deploy Function App to Portal. It now works perfectly. , FLASK_APP). It's been working pretty well until recently where the call (Http trigger) to the Durable function returns 503… Jun 14, 2021 · I have a workflow where certain events trigger a logic app.