Runtime: The specified framework was not found for .NET Core 2.1 preview 2 on Fedora 27

[tanaka-takayoshi]

Steps to reproduce

Cleanup the exiting .NET Core rpms and install preview2, then create a web project.
~
$ sudo dnf remove dotnet-*
$ sudo dnf install dotnet-sdk-2.1.300-preview2-008530-2.1.300_preview2_008530-1.x86_64
$ dotnet new mvc -o mvc-preview2
$ dotnet run
~

Expected behavior

Run the project without errors.

Actual behavior

See the error.
~~~
$ dotnet run
Using launch settings from /home/tatanaka/mvc-preview2/Properties/launchSettings.json...
It was not possible to find any compatible framework version
The specified framework 'Microsoft.AspNetCore.App', version '2.1.0-preview2-final' was not found.

• Check application dependencies and target a framework version installed at:
  /usr/share/dotnet/
• Installing .NET Core prerequisites might help resolve this problem:
  http://go.microsoft.com/fwlink/?LinkID=798306&clcid=0x409
• The .NET Core framework and SDK can be installed from:
  https://aka.ms/dotnet-download
  ~~~

Environment data

~~~
$ dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 2.1.300-preview2-008530
Commit: 822ae6d43a

Runtime Environment:
OS Name: fedora
OS Version: 27
OS Platform: Linux
RID: fedora.27-x64
Base Path: /usr/share/dotnet/sdk/2.1.300-preview2-008530/

Host (useful for support):
Version: 2.1.0-preview2-26406-04
Commit: 6833f3026b

.NET Core SDKs installed:
2.1.300-preview2-008530 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
Microsoft.NETCore.App 2.1.0-preview2-26406-04 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
~~~

[steveharter]

@leecow are you aware of any issues with Fedora?

[ghost]

@tanaka-takayoshi, try:

dotnet restore -s https://dotnet.myget.org/F/dotnet-core/api/v3/index.json

before running dotnet run. The issue is, not all packages are published to default nuget.org for 2.1.300-preview3.

@steveharter, this can happen on any platform, if we remove the stable version of dotnet and install unstable (aka: having only unstable/preview version of dotnet)

[leecow]

Packages were pulled while we worked out the host issue. Will begin uploading again later today.

[tanaka-takayoshi]

I found a newer version "dotnet-sdk-2.1.300-preview2-008533-2.1.300_preview2_008533-1.x86_64" was released. However, the same error happens after I removed the old rpms and installed new ones.

$  sudo dnf remove dotnet*
$  sudo dnf install dotnet-sdk-2.1.300-preview2-008533-2.1.300_preview2_008533-1.x86_64 

The following command didn't resolve the issue.

$ dotnet restore -s https://dotnet.myget.org/F/dotnet-core/api/v3/index.json

[thild]

dotnet add package Microsoft.AspNetCore.All resolve the issue.

SDK do .NET Core (refletindo qualquer global.json):
 Version:   2.1.300-preview2-008533
 Commit:    996eb6c92c

Ambiente de tempo de execução:
 OS Name:     opensuse
 OS Version:  20170721
 OS Platform: Linux
 RID:         linux-x64
 Base Path:   /usr/share/dotnet/sdk/2.1.300-preview2-008533/

Host (useful for support):
  Version: 2.1.0-preview2-26406-04
  Commit:  6833f3026b

.NET Core SDKs installed:
  2.1.300-preview2-008533 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.NETCore.App 2.1.0-preview2-26406-04 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:                                                                                                                                                                 
  https://aka.ms/dotnet-download

[tanaka-takayoshi]

dotnet add package Microsoft.AspNetCore.All doesn't resolve the issue on my side.
(both for 2.0.7 and 2.1.0-preview2-final)

[thild]

Before reinstall the SDK try to remove ~/.nuget and ~/.dotnet. After creates an asp.net project and add the package (dotnet add package Microsoft.AspNetCore.All). This will force the download of all deps. I was facing exactly the same error.

[joalcava]

I'm having the same issues on fedora 27, but I'm not being able to resolve it, I've tried removing ~/.nuget, ~/.dotnet and also installing package Microsoft.AspNetCore.All with command line.
Runing:

dotnet new mvc -o dotnet-mvc
cd dotnet-mvc
dotnet run

I get:

Usando la configuración de inicio de /home/joalcava/Projects/templates/dotnet-mvc/Properties/launchSettings.json...
It was not possible to find any compatible framework version
The specified framework 'Microsoft.AspNetCore.App', version '2.1.0-preview2-final' was not found.
  - Check application dependencies and target a framework version installed at:
      /usr/share/dotnet/
  - Installing .NET Core prerequisites might help resolve this problem:
      http://go.microsoft.com/fwlink/?LinkID=798306&clcid=0x409
  - The .NET Core framework and SDK can be installed from:
      https://aka.ms/dotnet-download

and runing dotnet --info:

SDK de .NET Core (reflejando cualquier global.json):
 Version:   2.1.300-preview2-008533
 Commit:    996eb6c92c

Entorno de tiempo de ejecución:
 OS Name:     fedora
 OS Version:  27
 OS Platform: Linux
 RID:         fedora.27-x64
 Base Path:   /usr/share/dotnet/sdk/2.1.300-preview2-008533/

Host (useful for support):
  Version: 2.1.0-preview2-26406-04
  Commit:  6833f3026b

.NET Core SDKs installed:
  2.1.104 [/usr/share/dotnet/sdk]
  2.1.300-preview2-008533 [/usr/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.NETCore.App 2.0.6 [/usr/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.0-preview2-26406-04 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

[rakeshsinghranchi]

Looks like ASPNET package is not getting installed.
@leecow , is this publishing issue ?

[abettadapur]

Any update on this issue? I am seeing the same problem on Fedora 27

[kizambrano]

Same on CENTOS 7. Did the same steps as above on 2.1.300-preview2. Worked out of the box on UBUNTU.

[thild]

In rpm based distros the aspnetcore-runtime-2.1.0-preview2-final package is getting installed in /opt/rh/rh-dotnet20/root/usr/lib64/dotnet/shared/. Just move to /usr/share/dotnet/shared/.

sudo mv /opt/rh/rh-dotnet20/root/usr/lib64/dotnet/shared/* /usr/share/dotnet/shared/

[tanaka-takayoshi]

@thild Thanks a lot!
I can workaround on Fedora 27. Also, this workaround works well on a custom docker image with RHEL based.

[joalcava]

RC1 was just released but I dont see the packages available in Fedora 28. Is it an issue or should we wait until final release?

[leecow]

re the aspnetcore-runtime-2.1.0-preview2-final package installing to the wrong location causing th error when installing from the https://packages.microsoft.com/rhel/7/prod/ repo.

Looks like a package which is specifically for Red Hat support (aspnetcore-runtime-2.1.0-preview2-final-rh.rhel.7-x64.rpm) was also uploaded alongside the 'generic' rpm (aspnetcore-runtime-2.1.0-preview2-final-x64.rpm). I'll work with the repo owners to get this pulled down. There are now Fedora-specific repos for 26 and 27/28 that won't have this problem. Update your feed baseurl to https://packages.microsoft.com/fedora/26/prod/ or https://packages.microsoft.com/fedora/27/prod/ and you'll be good to go. Not that only the latest 2.0 release and 2.1 RC are available on this feed. If you need older versions, the rhel/7/ repo can be used.

@joalcava - You can use the Fedora/27/ repo on 28. Update your existing repo config baseurl to https://packages.microsoft.com/fedora/27/prod/ or here are the complete feed setup steps if needed.

sudo rpm --import https://packages.microsoft.com/keys/microsoft.asc
wget -q https://packages.microsoft.com/config/fedora/27/prod.repo
sudo mv prod.repo /etc/yum.repos.d/microsoft-prod.repo

[chenyekun1]

I'm having the same issues on Mac OS, and I resolve this problem with change Microsoft.AspNetCore.All version of 2.1.2 to 2.1.0.