IDCRL error in PowerShell

Fixing “Connect-SPOService : Identity Client Runtime Library (IDCRL) could not look up the realm information for a federated sign-in.” -error

This post describes my super-simple fix to a weird error about “Identity Client Runtime Library (IDCRL)” failing with federated sign-in, when running PowerShell scripts against SharePoint Online. Symptoms While running your PowerShell scripts using SharePoint Online Management Shell, and trying to log in using Connect-SPOService, you get an error. Your cmdlets fail at connecting to the SharePoint Online with the following (or similar) error message: Identity Client Runtime Library (IDCRL) could not look up the realm information for a federated sign-in. Of course, you could […]

Typescript & React.JS

Fixed: Cannot use JSX unless the ‘–jsx’ flag is provided

This blog post is about fixing issues related to building a project with TypeScript files. Basically, if your jsx or tsx -files are not getting built to js-files (which is what the browser understands) in Visual Studio’s build, this post might solve the issue for you. Description While converting a project using React.js to TypeScript (and, hence, to use .ts and .tsx files instead of .js and .jsx) I stumbled upon this error: Cannot use JSX unless the ‘–jsx’ flag is provided The project would […]

Spatial SQL types

Solving the “Spatial types and functions are not available …” -problem

This page describes mutiple ways on how to fix the exception ‘Spatial types and functions are not available for this provider because the assembly ‘Microsoft.SqlServer.Types’ version 10 or higher could not be found.‘ which comes up during debugging or publishing your program, app or service using DbGeography. Symptoms While running a console program or perhaps installing an ASP.NET MVC website on a machine, where SQL Server (apart from the one that comes with the Visual Studio) has not been installed, you may encounter the following error: […]


Fixing the error: “Column XX in table dbo.YY is of a type that is invalid for use as a key column in an index.”

While using Entity Framework and code-first migrations, Entity Framework (EF) creates the indexes for you – but what if you need to create a custom one, explicitly based on certain field / column? Then you’ll have to tell EF which one to use as a key column. Usually, it’s easy – you just add the following annotation to the columns you’ll be using: [Index(“OfficialIds”, 1)] public int AreaId { get; set; } [Index(“OfficialIds”, 2)] public string EstateId { get; set; } (example stripped of extra code and other columns for clarity) And after adding the migration (Add-Migration… commandlet) you get […]

Duplicate String values

Duplicate object values in ASP.NET MVC Display Templates? Easy fix!

Are you getting duplicate object values (or whatever those Objects output in .ToString())? Eh, so was I, after I edited the display template for String. Found a fix, though. Description Okay – I just ran into one of my more stupid mistakes since.. Well, since forever. I had made some quick and simple edits in String.cshtml display template (among quite a few other edits before building again and seeing what happened), as I added support for Enum values there. After that I started getting duplicate […]

Entity Framework's Update-Database throwing an error

Fixing “An error occurred while updating the entries” while running code-first migrations in MVC 5 app

This post describes an issue with EF’s code-first migrations, when mapping between DB’s DateTime (datetime2) and C#’s DateTime simply fails, and results in the Update-Database cmdlet failing, too. It’s more or less a prime example of a situation, where the error itself tells very little about the actual issue, and since debugging code-first migrations is kind of difficult (see the best tips for that here!), it’s cumbersome to investigate. Symptoms So what’s the error that we’re running into, exactly? Below, you can find the most […]

Azure SQL Error

Fixing error “Cannot open server – – requested by the login. Client with IP address – – is not allowed to access the server.” in Azure deployments from Visual Studio

This article explains how to work your way around the exception ‘Cannot open server – requested by login…’ The issue is caused by Azure’s firewall logic, that might sometimes appear a little bit overzealous for simple development workloads, and might stop you from accessing your databases from your development machine. But just as everything else in Azure, the firewall exists for a reason, and working with it just requires a couple of extra clicks, is all. :) Symptoms Typically, you encounter this issue, when trying […]

Powershell: languagepack 0

Powershell Error: Cannot uninstall the LanguagePack 0 because it is not deployed.

Have you ever run into this, very non-descriptive and weird SharePoint error message “Cannot uninstall the LanguagePack 0 because it is not deployed”? You could encounter it while running some PowerShell scripts – most typically, when trying to update a wsp solution. I have, and luckily often easily solved! Symptoms Assume you’re trying to install, update or uninstall a SharePoint solution (.wsp package) using PowerShell-commands Install-SPSolution, Update-SPSolution or Uninstall-SPSolution (respectively). Operation fails with the following (or similar) error: Error: Cannot uninstall the LanguagePack 0 because it […]

Malformed web.config causing a Parser Error

“Server Error in ‘/’ Application” or “Parser Error” – it’s actually a malformed web.config killing your ASP.NET-application or SharePoint

This post describes how to resolve a kind of cryptic and oddly misdescriptive error message about Parser Error on your ASP.NET application or (an On-Premises) SharePoint site. I ran into this after deploying wsp-packages to a SharePoint farm, but you can apparently get this on ASP.NET MVC sites, too. The error doesn’t actually tell you what’s wrong, so figuring it out took a while. Hopefully it’ll help you, though! Symptoms: Parser Error from a random-looking location Once you navigate to your web- or SharePoint site, you only […]

SharePoint project properties

Visual Studio 2010 fails to show the design view of an aspx-page

This post is about solving the issue with Visual Studio 2010 failing to show the design view of an .aspx-page. Luckily, it’s an easy and pretty classical fix. Symptoms While trying to view or edit an aspx-page in design mode in Visual Studio 2010, the window is just plain empty and there’s little you can do about it – selecting view markup or hitting F7 may not do anything and restarting the Visual Studio doesn’t help. Solution The Design view requires connection to the SharePoint […]

Too long deployment path

Fixing error: “The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.”

This post describes a few different ways of fixing the error “The specified path, file name, or both are too long. The fully qualified file name must be less than 260 characters, and the directory name must be less than 248 characters.” one can get encounter this issue at least when trying to package/publish a SharePoint solution, web site or an Azure Webjob. Symptoms Visual Studio throws the following error when packaging a SharePoint solution to a .wsp file, OR when deploying or publishing your […]

SharePoint Online site menu

How to log in to SharePoint as a different user?

SharePoint Server versions 2013, 2016 and 2019 don’t have that old and familiar “sign in as a different user” -option in the site menu, and for the time being, nor does SharePoint Online. However, sometimes it’s very useful functionality to have, so it’s a bit weird Microsoft chose to get rid of the option. This post outlines a method that I’ve found to work quite well for making SharePoint ask for credentials, so that you can use another account to then log in! Really nice […]

File not found

“File not found”-error when trying to activate custom feature on SharePoint

This post is about fixing on of the most non-spesific errors you can get when activating features on SharePoint “File not found”. Problem “File not found” is one of the more annoying errors one can stumble upon when trying to activate a feature. There are quite a few reasons that can cause this error, but after the obvious ones (some files failing to be included in the package, botched wsp deployment, errorenous urls in event receiver) one thing to check might be the alternate access mappings. […]

SharePoint List Field Name creation dialog - the internal names for created fields are generated from the display name, and often end up being quite messy!

Programmatically creating readable internal names for new SharePoint fields

This post is about a small programmatic workaround to creating new SPFields for SPLists in SharePoint with human-readable internal names. This is mainly a usability improvement for your editors (and doesn’t change your life that much), but at the very least they will probably appreciate it! In short, I’ll show you how to avoid SharePoint’s dirty encoding (like replacing a space with “_x0020_”). This appliesto when you’re using server-side code to generate fields. Problem: non-readable internal names for SharePoint list fields When you create a […]

Troubleshooting guide for Windows hosts -file

This post describes how to fix possible issues with Windows hosts-file. I’ll first document how to find the damn file, and then go through a bunch of options on what to check and how to fix different possible issues. Opening the hosts -file First of all, hosts file location is usually: C:\Windows\System32\drivers\etc\hosts (link may or may not work depending on your security settings and browser version, but you can always copy-paste it to your text editor’s “Open”-dialog… :) Editing the file requires elevated privileges for […]

SharePoint Authentication prompt

Windows Authentication fails on SharePoint for all hostnames (other than localhost)

This post describes how to fix Windows Authentication on a SharePoint server failing on other local addresses than plain old localhost. Symptoms You get the standard Windows/Basic Authentication prompt when accessing your SharePoint site, but the site won’t accept your credentials when your accessing the site using an address like http://website. However, using address like http://localhost works fine (but of course may cause other problems). You also get event log entries like this (most likely in System -category): The program w3wp.exe, with the assigned process ID, […]