So, another interesting issue I ran into when developing Azure Functions locally. What an endless bag of funsies! 😁 This time, the issue was simple but infuriating – my Azure Functions host would just silently close when debugging: none of the breakpoints would be hit, no information would be logged anywhere. Azure Functions Core Tools (2.4.432 Commit hash: 3371a87e0fce2aa35986c0de8e77d5d618163b91) Function Runtime Version: 2.0.12332.0 The system cannot find the file specified Press any key to continue . . . I first encountered this by the Azure…Continue reading Azure Functions host quits with “The system cannot find the file specified”
I dont’ know about you, but it’s happened to me a few times: fire up your Azure functions project, hit F5 to start debugging, project builds without errors, Azure Functions host starts… And shuts down right away. This article has a few quick and simple tips on how to extract a bit more information from Azure Functions host (func.exe), when it’s just silently failing. This means by default you won’t get any information about what’s going wrong. However, a couple of steps should get you…Continue reading How to extract more information out of your Azure Functions host failing silently?
This post describes how you can easily enable debug/verbose information for your Azure Functions for a lightweight and built-in way to extract just a bit more information out of your Azure Function executions. There’s different methods available for Azure and your local development environment. Problem Azure Functions are awesome. But by default, your tools on gathering information without some additional configuration are not that great. The “monitor” view of the function doesn’t give you more than an excerpt of the console. This applies not only…Continue reading How to enable verbose logging for Azure Functions?
This post describes how you can access your Entity Framework Core model classes and the database context in your Azure Functions. In my example I’m using EF Core 2.1, but the main principle should be the same for later versions as well. Please note, that I use Azure functions runtime 2.x (and so should you!) Another easy one, that I was unable to find much guidance on! But first, let’s start with the basics. Why would you want to have this setup? Why would you…Continue reading How to access EF’s DbContext in an Azure Function on V2 runtime?
Welp – another interesting error encountered while deploying Azure Functions to Azure. So, everything runs nicely locally, but when you deploy your well-tested, functional and pretty code to run them in the cloud, you’ll just get these ugly and unfriendly errors. Long story short, “Function compilation error” is what you’re faced with. Example error below: Function compilation error Microsoft.CodeAnalysis.Scripting.CompilationErrorException : Script compilation failed. at async Microsoft.Azure.WebJobs.Script.Description.DotNetFunctionInvoker.CreateFunctionTarget(CancellationToken cancellationToken) at C:\azure-webjobs-sdk-script\src\WebJobs.Script\Description\DotNet\DotNetFunctionInvoker.cs : 314 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at async Microsoft.Azure.WebJobs.Script.Description.FunctionLoader`1.GetFunctionTargetAsync[T](Int32 attemptCount) at C:\azure-webjobs-sdk-script\src\WebJobs.Script\Description\FunctionLoader.cs : 55 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at async…Continue reading Sudden “Function compilation error” for an Azure Function
Have you ever run into a situation, where you just wanted to remove the currently standing function definitions from your app service without actually nuking the whole Functions app? I have! App Service configuration is usually easy to manage programmatically or by scripting, so even if you need to redo the deployment, it should be fairly straightforward. But what if you don’t have the setup scripted, and have already configured everything the way you like it – you’d really like to NOT nuke the whole…Continue reading How to remove Azure Functions without deleting the Functions App?
I recently ran into an issue when developing Azure Functions locally. My SPFx webpart was configured to request information from my locally running Azure Function, but suddenly started ending up in error. Browser only showed 404 for the first request (OPTIONS) the SPFx webpart was sending – although I knew the function was up and running! So what to do? Posts Related to “Azure Functions failing on “OPTIONS” call? Quick fix!”:The Scary Anatomy of a Microsoft License FraudHow to remove Azure Functions without deleting the…Continue reading Azure Functions failing on “OPTIONS” call? Quick fix!
Ignite 2018 is done and dusted, and it’s a good time to quickly recap what’s new for Azure Functions in the coming months. They’ve certainly been getting a lot of love from Microsoft, which is GREAT! New features for Azure Functions There was a bunch of exciting new things announced! Not all of the things in this blog post are necessarily completely new – but rather reached General Availability. Let’s go through them one by one… Posts Related to “Ignite 2018 recap: What’s new for…Continue reading Ignite 2018 recap: What’s new for Azure Functions?
Let me start this article, by reminding everyone that Azure Functions are awesome, and you should use them despite some hiccups. Having said that, let’s fix some errors! In the beginning of September 2018, Microsoft started pushing out breaking changes to Azure Functions 2.x. They had announced this a full month in advance, so they expected everyone in the world to update their Azure Functions to avoid the functions from breaking. I guess, however, that in real life, a month is not that much. Me,…Continue reading Fixing “The following functions are in error: Object reference not set to an instance of an object.” error in Azure Functions
This post describes, how you can access the function’s Application/Environmental settings/variables from your C# code. Different versions of Azure Functions have different ways to access the Azure Function settings. This has been another little thing, that I always forget – so better document it somewhere! How to get application settings in different runtime versions of Azure Functions? This has changed between different versions of Azure Functions runtime – so I’m describing what works for your functions using v1 runtime, what works for v2, and of…Continue reading How to access Azure Function App’s settings from C#?
This post describes one way to resolve a problem, where you receive an error like “The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.” when calling your Azure Functions. Problem Another day, another simple, yet kind of weird issue to solve! This time I was developing a simple Azure Function to access Microsoft Graph API. This particular issue was kind of bugging, since the error message actually had nothing to do with the actual issue and gave…Continue reading How to fix an Azure Function (v2) failing with error “The resource you are looking for has been removed, had its name changed, or is temporarily unavailable.”
I won a hackathon! They had fun topics, it was a cool challenge, a well organized event, and had cool prizes. Since this is the first hackathon I ever took part in, I thought I’d post something about my experience and the solution(s) I figured out. Description I recently took part in a fun hackathon organized by DevPost for Microsoft. Earlier, I posted some info about my hackathon entry, How to Resolve Managed Metadata Madness in SharePoint? I had played around with Flows and Cognitive Services before,…Continue reading Hackathon win: Resolving Managed Metadata Madness
Using Azure Functions and Cognitive Services Text API to enrich a Flow that fills Metadata for new items in a Modern SharePoint Team Site. That’s, in a nutshell, the solution I submitted to a recent online hackathon. Quite a mouthful, isn’t it? The whole solution (and a public vote, if you’re interested!) is available here: https://devpost.com/software/resolving-managed-metadata-madness-in-sharepoint – this blog post will describe the solution and the reasoning behind it. Preface Some time ago my manager asked me to take a few weeks off, since I had accrued…Continue reading How to Resolve Managed Metadata Madness in SharePoint?