Error While Redeploying The Azure Function System.Exception: Publishing failed

In this azure tutorial, we will discuss how to fix the error, Error While Redeploying The Azure Function System.Exception: Publishing failed. This error I got while redeploying an Azure function using the Visual Studio 2019.

Error While Redeploying The Azure Function System.Exception: Publishing failed

I have created one Azure HTTP triggered function using the Visual Studio 2019. Below is the function that I have created

using System;
using System.IO;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using System.Collections.Generic;
using Microsoft.Azure.Storage.Queue;
using System.Net.Http;
using System.Collections;
using System.Collections.Concurrent;
using System.Net.Http.Formatting;

namespace MyDemoAzureFunction
{
    public static class Function1
    {
        [FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "post", Route = null)] HttpRequest req,
            ILogger log)
        {
          
            log.LogInformation("C# HTTP trigger function processed a request.");

            string name = req.Query["name"];

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);
            name = name ?? data?.name;

            return name != null
                ? (ActionResult)new OkObjectResult($"Hello, {name}")
                : new BadRequestObjectResult("Please pass a name on the query string or in the request body");
        }
    }
}

Initially, I tried to deploy it, It deployed successfully. But then I modified and added a few lines of code in the above function and when I tried redeploying the Azure function, I got the below complete error message

05-07-2020 11:12:30
System.AggregateException: One or more errors occurred. ---> System.Exception: Publishing failed.
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
   at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at Microsoft.Publish.Framework.Model.DefaultPublishSteps.<>c__DisplayClass26_0.<IsBuildCompletedSuccessfully>b__2()
   at System.Threading.Tasks.Task`1.InnerInvoke()
   at System.Threading.Tasks.Task.Execute()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Publish.Framework.Model.DefaultPublishSteps.<DefaultCorePublishStep>d__23.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Publish.Framework.ViewModel.ProfileSelectorViewModel.<RunPublishTaskAsync>d__176.MoveNext()
---> (Inner Exception #0) System.Exception: Publishing failed.<---

Error While Redeploying The Azure Function System.Exception: Publishing failed [Solved]

To fix the above error, I was trying different ways but none of them were working. So finally what i have followed the below steps to fix the issue.

Step-1: Login to Azure Portal (https://portal.azure.com/)

Step-2: Navigate to the Azure function app that you have deployed earlier and trying to modify the code trying to redeploy the Azure function app. When I have verified the Azure Function App status was the start. Meaning it was running already.

Step-3: Now click on the Stop button to stop the Azure function App. Click on the Yes button for the confirmation on the Stop web app window.

Step-4: Now when i started redeploying the Azure function App, it deployed successfully with out any issue.

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Conclusion

In this article, we have discussed the fix for the Error While Redeploying The Azure Function System. Exception: Publishing failed. Hope it will help you to fix your issue !!!