Rider IDE error ".NET Framework Not Installed" - rider

I installed the newest Rider IDE from Jetbrains.
When I start it I always get this error:
.NET Framework Not Installed: Download and install .NET Framework 4, .NET Framework 4.5 Developer Packs
However I installed 4.5.2 as you can see in the screenshot. What is going wrong?

Related

.NET Framework 4.8 is installed but not showing in Visual Studio 2022

I am having issues while creating a project, it didn't show .Net framework 4.8. But I have already installed it. .Net SDK also installed.
When I check Programs and features in control panel, there is no source of Microsoft .Net framework 4.8. But it is showing .Net framework 7.0 and other versions.
After that I checked in Registry editor Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\NET Framework Setup\NDP\v4\Full there it is showing 4.8 version. But its not showing in Visual studio 2022.
Tried with some solutions through google and youtube. There is no use

Building a net40 project in VisualStudio 2022

A Windows update trashed my computer so I've had to reinstall from scratch.
We have some projects that multi-target net40
<TargetFrameworks>net40;net6.0</TargetFrameworks>
which were building just fine (and they build in the Azure pipeline) but now I can't get them to build locally.
My old machine was originally win10 with VisualStudio 2017, 2019, and 2022, but so far on the rebuilt machine I only have 2022.
The projects won't build, saying
error MSB3644: The reference assemblies for .NETFramework,Version=v4.0 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
I guess this means I have to install an SDK pack?
I've tried 4.6.2 and 4.6.1 which are available through the VisualStudio installer, and 4.5 (NDP452-KB2901951-x86-x64-DevPack.exe from https://dotnet.microsoft.com/en-us/download/dotnet-framework/thank-you/net452-developer-pack-offline-installer) which is not, and Windows SDK for Windows 7 and .NET Framework 4 from https://developer.microsoft.com/en-gb/windows/downloads/sdk-archive/
but still no joy.
Any idea what I need to do to get it to build again?
The solution seems to be to install VisualStudio2017 with net40.

.Net5 sdk is installed but why can't choose to create project

I recently installed versions of .net core sdk 3.1 and 5. When using the .net5 version today, I found that I couldn't select the version when I created the project, only version 3.1. So I opened the terminal and entered the command: dotnet --list-sdks to query all my installed versions and found that only 3.1.405[C:\Program Files\dotnet\sdks] is displayed. What is the reason for this? I'm sure I have the sdk for .net5 installed. I got it from this site.
https://dotnet.microsoft.com/en-us/download/visual-studio-sdks
I recently installed versions of .net core sdk 3.1 and 5. When using
the .net5 version today, I found that I couldn't select the version
when I created the project, only version 3.1
The issue might relates the Visual Studio version. From the Asp.net core document and the SDK download page, we can see that to use Asp.net 5, it required Visual Studio 2019 16.8 or later version:
So, you can upgrade the VS 2019 version to Visual Studio 2019 16.11.9 version or Visual Studio 2022, and then in the Visual Studio Installer click the "Modify" button on the installed Visual Studio, in the popup window, go to the Individual components panel, checked the .NET 5.0 runtime option:
Then when create new applications using Visual Studio, you can choose the .Net 5.0 version.

Visual Studio 2022 does not find reference assemblies for >NETframework Version 4.0

Trying to compile Python Django project but receiving build error:
C:\Program Files\Microsoft Visual Studio\2022\Community\MSBuild\Current\Bin\amd64\Microsoft.Common.CurrentVersion.targets(1217,5): error MSB3644: The reference assemblies for .NETFramework,Version=v4.0 were not found. To resolve this, install the Developer Pack (SDK/Targeting Pack) for this framework version or retarget your application. You can download .NET Framework Developer Packs at https://aka.ms/msbuild/developerpacks
Done building project "myFinancialTracker.pyproj" -- FAILED.
How can I resolve?
I also got the same error as you, this is because VS 2022 doesn't come with
.net framework 4.0 option during installation, to overcome this problem I install VS 2019 and enable the usage of .net-framework 4.0 during installation. After the installation, I tried to run my project again using VS2022 and the error goes away.
I tried to download and install .net-framework 4.0 separately but Microsoft doesn't allow me to do so, to overcome this, I install VS2019 instead.

How to update Visual Studio 2017 Template from ASP.NET Core 2.0 to 2.1

I have installed Visual Studio 2017 Community Version 15.7.5 2 days back and everything is up-to-date but the version of ASP.Net Core is 2.0 and I need it to be 2.1.
I am unable to find a way to update it to version 2.1. I have also searched the internet but there are ways to upgrade projects not to update this. So any ideas or help would be appreciated
It looks like the SDK for .NET Core 2.1 is not installed. I have recently faced the same issue after .NET Core 2.1 was released.
To solve it, download and install the SDK for .NET Core 2.1 following the steps below. Also, note that you need to run Visual Studio 2017 15.7 or newer version, as specified in the .NET Core 2.1 download page.
Close all running Visual Studio instances.
Download the .NET Core SDK from the Microsoft download page. At the time of writing this answer, you will find version 2.1 to be the latest available.
Run the installer and follow the installation steps.
Run Visual Studio: now you should be able to create .NET Core applications targeting version 2.1.