All Questions
1,462
questions
113
votes
16
answers
198k
views
The configuration file 'appsettings.json' was not found and is not optional
The Azure error is:
.Net Core: Application startup exception:
System.IO.FileNotFoundException: The configuration file
'appsettings.json' was not found and is not optional.
So this is a bit ...
- 1,341
58
votes
9
answers
33k
views
Azure Functions: There was an error performing a read operation on the Blob Storage Secret Repository
In testing Azure Functions locally, I am receiving this error:
"There was an error performing a read operation on the Blob Storage
Secret Repository. Please ensure the 'AzureWebJobsStorage' ...
- 970
56
votes
2
answers
10k
views
CI/CD of a ASP.NET Core Web API using VSTS
I have created an ASP.NET Core Web API app using Visual Studio 2017 (Community Edition). I could successfully publish to an Azure App Service using Visual Studio.
I now want to set up CI/CD using ...
- 4,593
35
votes
5
answers
28k
views
How to change Azure App Service to 64-bit
I have been having trouble making a request to my 64-bit ASP.NET Core API running on an Azure App Service. The error I get back is:
Unhandled Exception: System.BadImageFormatException: Could not ...
- 9,474
28
votes
3
answers
39k
views
Azure ServiceBus Message Serialization/Deserialization
I am using a .NET Core application to send an object through an Azure Service Bus Queue and have it received by a Web Job (.NET Core as well.)
My question is how to serialize/deserialize to send/...
27
votes
16
answers
69k
views
The listener for function was unable to start. Why?
I'm getting the following error when I run the azure function from visual studio.
A ScriptHost error has occurred [1/19/2018 6:40:52 AM] The listener
for function 'MyFunctionName' was unable to ...
- 27.6k
26
votes
4
answers
31k
views
How to register ServiceBusClient for dependency injection?
I’m trying to register ServiceBusClient from the new Azure.Messaging.ServiceBus package for dependency injection as recommended in this article using ServiceBusClientBuilderExtensions, but I can’t ...
- 293
25
votes
4
answers
17k
views
InvalidOperationException: Key type not specified. Microsoft.AspNetCore.ApiAuthorization.IdentityServer.ConfigureSigningCredentials.LoadKey()
Summary
Attempting to publish a basic .NET Core React app with auth functionality I am receiving an error with IdentityServer. This is using dotnet new react --auth Individual, .Net Core 3.0 Preview5,...
- 1,291
21
votes
2
answers
4k
views
Missing dotnet.exe in Azure WebJob
I'm trying to deploy a .NET Core Console App as an Azure WebJob. All files etc. are getting copied to the right directories but my console app its output is a .dll, so it requires dotnet.exe to start.
...
- 592
20
votes
9
answers
24k
views
Error "Did not find functions with language [dotnet-isolated]" in Azure Function when migrating from .NET 3 to .NET 5
I'm trying to migrate an Azure Function that works perfectly on .NET 3.1 to .NET 5.
I followed Microsoft's GitHub guide and still can't get it to run or debug locally (didn't even try to publish to ...
- 870
20
votes
2
answers
10k
views
Azure Function gives error: System.Drawing is not supported on this platform
(If this question is poorly worded, could someone please help me clear it up?)
I have an Azure Function (2.0) which relies on some System.Drawing code. I've added a NuGet reference to System.Drawing....
- 3,154
17
votes
6
answers
16k
views
Invalid value for key 'authentication'
I have a .NET Core 3.0 app where am trying to connect to a Azure SQL database using EF Core and Active directory integrated authentication.
I have verified that I have access to this database from my ...
- 765
17
votes
3
answers
2k
views
How do I report a bug in Windows Server Service Bus?
I tried to google. Microsoft Connect doesn't accept bugs for Service Bus. Azure Portal sends to either MS forums or to StackOverflow - so here I am.
The question is really in the title: how do I ...
- 79.8k
16
votes
4
answers
41k
views
asp.net core web API file upload and "form-data" multiple parameter passing to method
I have created an endpoint that takes files as parameters:
[HttpPost("[action]")]
[Consumes("multipart/form-data")]
public ActionResult UploadImage(IFormFile Files, string param)
{
...
16
votes
2
answers
9k
views
Complex object app settings in Azure Function
I have these entries in my local.settings.json
{
"IsEncrypted": false,
"Values": {
"AzureWebJobsStorage": "whateverstorageaccountconnectionstring",
"FUNCTIONS_WORKER_RUNTIME": ...
- 2,269
15
votes
5
answers
7k
views
Creating an Azure ServiceBus Queue via code
Apologies, I'm new to Azure. I created a service bus and queue via the Azure portal using this tutorial.
I can write and read from the queue ok. The problem is, to deploy to the next environment, I ...
- 959
15
votes
5
answers
10k
views
Azure Function - System.Data.SqlClient is not supported on this platform
I'm running the following insert code within my azure function into an azure sql server 2014 database:
private static void Command(SqlConnection sqlConnection, string query)
{
var ...
- 59.4k
15
votes
1
answer
13k
views
What is the role of "MaxAutoRenewDuration" in azure service bus?
I'm using Microsoft.Azure.ServiceBus. (doc)
I was getting an exception of:
The lock supplied is invalid. Either the lock expired, or the message
has already been removed from the queue.
By the ...
- 8,139
15
votes
1
answer
4k
views
.net core azure deployment failing: Project file does not exist
I have an app-service app set up in Azure which is set to deploy upon commit into a team-services git repository. This has been working fine until now, and the deployment is failing with:
MSBUILD : ...
- 7,076
14
votes
5
answers
51k
views
How read all files from azure blob storage in C# Core
I want to read files from an azure blob storage (the files inside the folder), the blob storage contains many folders.
I want to read my folder 'blobstorage' ,it contains many JSON files performing ....
- 157
14
votes
4
answers
13k
views
Azure function app deploy and release pipeline error
I pushed my .net core function application using visual studio and now setting up release pipeline. I can publish and execute the application just fine and it works great on the Azure portal. However ...
- 1,243
13
votes
3
answers
8k
views
How to migrate Azure Functions v3 to .net core 5.0
I have upgraded all assemblies in an Azure Function v3 project to version 5.0 but I am unable to run the function. Here it is my function's csproj file's partial definition:
<PropertyGroup>
&...
- 3,857
13
votes
2
answers
1k
views
How to diagnose AspNetCore application not starting on Azure App Service?
We have multiple AspNetCore applications hosted on an Azure Web App as OutOfProcess and deployed as virtual applications with separate paths.
We have the same setup in different environments, all ...
- 171
12
votes
3
answers
4k
views
WebJobsStartup in Azure Functions v2 not working when targeting netcoreapp2.1
I have an Azure Function v2 app, that I originally targeted netcoreapp2.1.
I then have a Startup.cs class, annotated with [assembly: WebJobsStartup(typeof(Startup))] to set up dependency injection, ...
- 19.7k
11
votes
5
answers
36k
views
The MetadataAddress or Authority must use HTTPS unless disabled for development by setting RequireHttpsMetadata=false
net core application. I have added azure ad authentication. Below is my startup.cs file
services.AddAuthentication(x =>
{
x.DefaultAuthenticateScheme = ...
- 801
11
votes
2
answers
9k
views
Azure functions configure timer trigger from Azure App Configuration
I'm doing an Azure Function that is timer triggered. I want to be able to change the timer, i.e the cron expression, without having to do a re-deploy. I'm getting my other settings from an App ...
11
votes
5
answers
8k
views
Azure KeyVault - Sign JWT Token
I began using Azure Keyvault to store private keys for my application.
I have a use case where I need to sign a JWT token with an RSA private key.
When I had the private key in my application ...
- 1,009
11
votes
6
answers
3k
views
CngKey.Import on azure
var rawData = Convert.FromBase64String(_signingKey);
var cng = CngKey.Import(rawData, CngKeyBlobFormat.Pkcs8PrivateBlob);
I use this code to extract key, from embedded base64 string.
It works fine ...
- 111
11
votes
3
answers
5k
views
ASP.NET Core website on Azure fails to start with a 502.5 error after upgrade from .NET Core 1.1.1 to .NET Core 1.1.2
I have a .NET Core web application which I deploy as an Azure Web App.
This has been working perfectly until last night when I applied the Visual Studio 2017 upgrade (v15.2).
The .net core version ...
- 295
11
votes
1
answer
8k
views
How to install several .NET Core SDK versions on Azure Devops
Is it possible to install multiple versions of the .NET Core SDK using azure-pipelines.yml on Azure DevOps? If yes, how can I do so?
I'm trying to build a Blazor Server App using ElectronNET. On my ...
- 4,790
11
votes
1
answer
9k
views
Configure AspNetCoreModuleV2 in process for multiple virtual apps in Azure App Services
I have ASP.NET Core applications hosted on Azure App Services as two virtual applications in the same App Services instance. The main site app is hosted at / and the blog application at /blog. I would ...
- 1,043
11
votes
3
answers
5k
views
Azure Service Bus - topics, messages - using .NET Core
I'm trying to use Azure Service Bus with .NET Core. Obviously at the moment, this kind of sucks. I have tried the following routes:
The official SDK: doesn't work with .NET Core
AMQP.Net Lite: no (...
- 41.6k
11
votes
2
answers
5k
views
Specified framework 'Microsoft.AspNetCore.App', version '3.1.0' was not found for a Linux Azure WebApp
Problem
After upgrading a .Net Core 2.2 Linux Web App to .Net Core 3.1 in Azure, the application is down with a Specified framework 'Microsoft.AspNetCore.App', version '3.1.0' was not found error. I ...
- 1,758
10
votes
1
answer
16k
views
In Azure Functions, how to use route parameter inside an output binding
Below is an http triggered function. For the route, I have specified a variable user. Now, I want this variable user to be consumed in any other output binding. Now working code shown with Blob as an ...
- 845
10
votes
3
answers
27k
views
.NET CORE 3.1 on Azure Web Sites: 500.37 ANCM Failed to Start Within Startup Time Limit
I have .NET Core 3.1 API which is deployed in Azure web application service. I had trouble running the application in Azure because of the error 500.37 ANCM Failed to Start Within Startup Time Limit. ...
- 23.4k
10
votes
3
answers
11k
views
Using AddAzureKeyVault makes my application 10 seconds slower
I’m having this very simple .NET Core application:
static void Main(string[] args)
{
var builder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
...
- 3,878
10
votes
2
answers
729
views
Inexplicable storage transactions from Azure Functions
I have a project with a couple of .NET Core based Azure Functions running on a schedule. One of them runs once every 10 minutes and serves to update view counts similar to how SO tracks question views ...
- 23k
10
votes
6
answers
11k
views
Azure Web App Service "container is unhealthy" error forcing container restart every 15min
I have a dot net core 3.1 app running in an Azure Web App environment (Linux). The app is running fine in local environment/debug. When publishing to Azure, the app runs, but in the Applictions logs, ...
- 223
10
votes
4
answers
3k
views
Azure WebJobs (3.x) Continuous job not showing Functions in Dashboard
We have an Azure WebJob (3.x) running under an API App in Azure, all Core 2.1. It publishes fine, and runs, but doesn't show any Functions or list the Function Invocations on the dashboard. Which is ...
- 591
9
votes
2
answers
22k
views
Azure Application Insights not showing data
I have an ASP.NET Core application running as Azure App Service. Azure Application Insights is enabled (I followed these instructions). The problem is my instance of Azure Insights on Azure Portal isn'...
9
votes
2
answers
4k
views
Cosmos DB Emulator: Failed to get authorization headers for offers
I upgraded Azure Cosmos DB Emulator from version 1.22 to 2.0. Now when I go to the local Data Explorer, nothing loads in the Explorer tab and I see error
Failed to get authorization headers for ...
- 6,564
9
votes
4
answers
1k
views
What package should I use for Azure Tables when migrating away from "WindowsAzure.Storage"
I am currently migrating a project that was written for .NET Fx 4.8 using ASP.NET WebApi to .NET 5.0. This project makes heavy use of the package WindowsAzure.Storage for accessing BLOBs, tables and ...
- 836
9
votes
1
answer
6k
views
Failed executing DbCommand because timeout expired .net core
My goal is to provide simple API to retrieve data from Payments (~400 rows) table which consists 5 columns.
Payment: Id (int),
PaymentsNumber (tinyint),
Rate (decimal(18,2)),
ProductType (tinyint),
...
- 8,139
9
votes
1
answer
1k
views
How to add command line arguments to Azure Web App?
Locally we can do dotnet run [args] or dotnet publish followed by dotnet mydll.dll [args].
When deploying that App to an Azure Web App under App Services, how do you make it startup with these ...
- 2,286
8
votes
2
answers
4k
views
The "--output" option isn't supported when building a solution
I am attempting to deploy a simply Web Api App to Azure to help me familiarise myself with Azure services and Github Actions for deployment. Below are the steps I have undertaken
1 - Create a new ....
- 1,065
8
votes
1
answer
11k
views
How do I set a retry policy on an Azure blob storage operation using the Azure.Storage.Blobs assembly?
Using the latest (12.3.0 at the time of writing) Nuget package for the Azure.Storage.Blobs assembly, and uploading asynchronously with the BlobServiceClient class, I want to set retry options in case ...
- 11.2k
8
votes
1
answer
2k
views
Azure Service Bus Triggered Function - Bind to MessageReceiver
I'm trying to bind to MessageReceiver in an Azure Service Bus Triggered Function.
My goal is to handle dead letter queue messages and complete them.
public static class Function1
{
[...
- 645
8
votes
3
answers
4k
views
How to publish asp.net core web job to azure app service
I have started with asp.net core 2 web app and I can publish it to App Service from Visual Studio using web deploy.
I've created new clean .net core 2 console app. I'm able to upload it as webjob and ...
- 26.2k
8
votes
1
answer
11k
views
Is it possible to move from windows to linux Azure App Service easily?
As I see I need to create new linux app service.
Recreate domain, certificates binding and deployment pipeline.
And then remove old one.
Is it simplier way to do this?
8
votes
2
answers
5k
views
Azure DocumentDB sporadically throws SocketException / GoneException
UPDATE (2/8/17):
See answer below.
UPDATE (2/7/17):
I've found that a restart can allow me to successfully run the web app from Visual Studio 2015, and hit the endpoint several times. However, when ...
- 4,499