ASP.NET Core 3.0 not showing on Visual Studio 2019

There is an option in Tools -> Options that enables preview versions of the .NET Core SDK. In the VS Preview shipping channel, it is on (by default, and not settable). In the VS Release channel, it defaults to off and you can opt-in.

https://i.stack.imgur.com/3rkE0.png

(Note: it's disabled in the screenshot because I have a Preview build installed.)

The reason for this is to allow you to customize whether a project using a released version of .NET Core (such as 2.1, the current LTS) will use tooling from the newer not-yet-release-quality SDK.

Prior to 16.1, this option was located on the Tools -> Options -> Projects and Solutions -> .NET Core page.

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Here is what I did to show .NET Core 3.0 in VS2019

Installed .NET Core 3.0 SDK (No Success) Restarted VS2019 after installing .NET Core 3.0 SDK (No Success) Updated VS2019 (Worked Perfectly)

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I had the same issue. Here is what worked for me.

First, download the latest .Net Core 3.0 SDK (see 1,2 below).

https://i.stack.imgur.com/4a406.png

Next, Check for updates (4,5). (this is what helped me the most)

https://i.stack.imgur.com/4sCD4.png

Next, Enable Preview SDK (5,6,7,8,9) and restart

https://i.stack.imgur.com/40ZtO.png

Now, the .net core 3.0 option should show (11).

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It no longer works... again!

The SDK 3.0.100-preview8-013656 doesn't provide the ASP.Net Core 3.0 project template.

You have to uninstall it and install SDK 3.0.100-preview7-012821

https://dotnet.microsoft.com/download/dotnet-core/3.0

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I have the same issue here after moving from Visual Studio 2019 Preview to Visual Studio 2019 RC.

This page seems to suggest that you need Preview to use .net Core 3.0 which is annoying.

https://dotnet.microsoft.com/download/dotnet-core/3.0

I looked up the difference between RC and Preview, and they pull builds from different channels (stable and preview).

The next thing I’m going to try is to go back to Preview to see if .Net Core 3.0 becomes visible again.

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Tried to get .NET Core 3 (preview 8 in my case) to work in the release version of Visual Studio 2019 but ASP.NET Core 3.0 refused to show up in the "Create new ASP.NET Core web application" dialog.

What eventually worked was to install the Preview version of Visual Studio 2019.

I could have saved a few hours and a lot of hair if I had taken the warning text ".NET Core 3.0 should be used with the latest previews of Visual Studio." (https://dotnet.microsoft.com/download/dotnet-core/3.0) more literally...

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In my case is because I did not installed Visual Studio 2019 with that feature. So just create a new project and type .net core. Then click on Install more tools and features:

https://i.stack.imgur.com/4oMRb.png

Then add the following feature:

https://i.stack.imgur.com/R1USA.png

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I had this problem and solved it as follows:

STEP 1: Download .NET Core 3.0

STEP2: Enable the ability to consume preview SDKs by default, As shown below:

https://i.stack.imgur.com/cfw3s.jpg

https://i.stack.imgur.com/yhlla.jpg

https://i.stack.imgur.com/geHaz.png

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I had the very same issue. I tried everything with no success

I already had only x64 version of .NET Core SDK

In addition i had to install x86 version too. That WORKED !!!

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If your solution uses global.json and sdk:version isn't compatible with the target framework, it won't let you select it or it disappears from Target framework drop-down in your project's properties. You will need to update it to something like this:

{
  "sdk": {
    "version": "3.1.0",
    "rollForward": "latestMinor"
  }
}

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I resolved it by installing

dotnet-sdk-3.1.403-win-x86.exe dotnet-sdk-3.1.403-win-x64.exe Because the visual studio was taking the SDK from "C:\Program Files (x86)\dotnet\sdk" once you install "dotnet-sdk-3.1.403-win-x86.exe" there will one folder under the above directory. then no need to restart your PC.

https://dotnet.microsoft.com/download/visual-studio-sdks?utm_source=getdotnetsdk&utm_medium=referral

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ASP.Net Core 3.0+ just runs on vs2019 version 16.7+. You need to go to help tab on your visual studio and check for updates and update it to the latest version

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Note! (don't use it on your developer machine)

0- make sure you installed .net core 3 sdk. dotnet --list-sdks

1- make sure Tools -> Options that enables preview versions of the .NET Core SDK enabled.

2- uninstall all x86 version of .net core sdk from your machine.

3- restart visual studio and try to create a new project.

https://i.stack.imgur.com/ecLCN.png

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I was not able to get .netcore 3.0 preview8 working on my Visual Studio Community Edition (version 16.2.3). I opted to uninstall .netcore 3.0 preview8 and I installed .netcore 3.0 preview7 instead. After insalling .netcore 3.0 preview7 In Visual Studio I checked use previews of the .NET Core SDK option that is in Tools -> Options -> Preview Features and I restarted it. That worked for me, but if someone have .netcore 3.0 preview8 already working, help will be appreciated it.

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https://i.stack.imgur.com/1rDdl.png

After that you can download necessary updates and go using .net core 3.0

https://i.stack.imgur.com/JPxaW.png

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I noticed an interesting behavior. I had the latest version of VS with all the dependencies installed. But when I try to add a new project to the solution, the dialog does not show me the options beyond .Net Core 2.2

https://i.stack.imgur.com/ohlQo.png

But When I create the new project from the startup page, the drop down does show the ASP.NET Core 3.1

So I was able to work around the issue by creating the new project from the startup page, then add the existing project to the solution.

https://i.stack.imgur.com/GRAim.png

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I've had the same issue after installing .net core 3.1. This is how I resolved it.

open powershell, type dotnet --version, it returns '2.2.300' go to 'programs and features', unistall .net core sdk 2.2.3.0 run dotnet --version again, it returns '3.1.302' and in VS 2019 it shows '.net 3.1'

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This answer is for the newest .NET Core version as of 10/11/2020, which is .NET Core 5.0

Specs: VS Version 16.8.0

Target Version of .Net Core: 5.0

You must have version 16.8.0 in order to have .Net Core 5.0

If you still have problems with Visual Studio not showing .Net Core 5.0 in Visual Studio version 16.8.0 (and assuming you downloaded the .NET Core 5.0 SDK for Visual Studio), well, apparently (and correct me if I'm wrong) it is now called just .Net 5.0, omitting the Core.

https://i.stack.imgur.com/931IU.png

After selecting .NET 5.0, I was able to install other libraries which are currently version 5.0+ and dependent on .NET Core 5.0+

Is the new name intentional? Anyways, here some evidence of this working (I was able to install the newest version of Newtonsoft and Entity Framework for .Net Core):

https://i.stack.imgur.com/O3onM.png

Funny enough, when I try to create a new .Net Core project, the version shows up as expected:

https://i.stack.imgur.com/GfQkS.png

I'm very sorry for my English!

[PS: I'm literally copying&pasting this answer, which I answered somewhere else, but given that, when you Google this issue, this stackoverflow question appears first. So thats why I'm reposting]

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