Fedora 32: No SDKs were found

Hello! I followed the instructions here: https://docs.microsoft.com/en-us/dotnet/core/install/linux-package-manager-fedora32

For installing dotnet core SDK and runtime using the Fedora package manager, using the commands:

sudo dnf install dotnet-sdk-3.1
sudo dnf install aspnetcore-runtime-3.1
sudo dnf install dotnet-runtime-3.1

Note that the 2nd and 3rd command above did nothing, because the first command for the sdk installed everything.

After successfully installing, I can see that I have all the packages:

$ sudo dnf list installed 'dotnet*'
Installed Packages
dotnet-apphost-pack-3.1.x86_64                              3.1.3-1.fc32                             @updates                    
dotnet-host.x86_64                                          3.1.3-1.fc32                             @updates                    
dotnet-hostfxr-3.1.x86_64                                   3.1.3-1.fc32                             @updates                    
dotnet-runtime-3.1.x86_64                                   3.1.3-1.fc32                             @updates                    
dotnet-sdk-3.1.x86_64                                       3.1.201-1                                @packages-microsoft-com-prod
dotnet-targeting-pack-3.1.x86_64                            3.1.3-1.fc32                             @updates                    

The problem is, however, that no SDK’s are detected

$ dotnet --info
  It was not possible to find any installed .NET Core SDKs
  Did you mean to run .NET Core SDK commands? Install a .NET Core SDK from:
      https://aka.ms/dotnet-download

Host (useful for support):
  Version: 3.1.3
  Commit:  4a9f85e9f8

.NET Core SDKs installed:
  No SDKs were found.

.NET Core runtimes installed:
  Microsoft.AspNetCore.App 3.1.3 [/usr/lib64/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.3 [/usr/lib64/dotnet/shared/Microsoft.NETCore.App]

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

System info

$ cat /etc/*release
Fedora release 32 (Thirty Two)
NAME=Fedora
VERSION="32 (Workstation Edition)"
ID=fedora
VERSION_ID=32
VERSION_CODENAME=""
PLATFORM_ID="platform:f32"
PRETTY_NAME="Fedora 32 (Workstation Edition)"
ANSI_COLOR="0;34"
LOGO=fedora-logo-icon
CPE_NAME="cpe:/o:fedoraproject:fedora:32"
HOME_URL="https://fedoraproject.org/"
DOCUMENTATION_URL="https://docs.fedoraproject.org/en-US/fedora/f32/system-administrators-guide/"
SUPPORT_URL="https://fedoraproject.org/wiki/Communicating_and_getting_help"
BUG_REPORT_URL="https://bugzilla.redhat.com/"
REDHAT_BUGZILLA_PRODUCT="Fedora"
REDHAT_BUGZILLA_PRODUCT_VERSION=32
REDHAT_SUPPORT_PRODUCT="Fedora"
REDHAT_SUPPORT_PRODUCT_VERSION=32
PRIVACY_POLICY_URL="https://fedoraproject.org/wiki/Legal:PrivacyPolicy"
VARIANT="Workstation Edition"
VARIANT_ID=workstation
Fedora release 32 (Thirty Two)
Fedora release 32 (Thirty Two)

If I check my path for my non-root user, the only dotnet related entry is /home/wes/.dotnet/tools.

I’ve tried uninstalling and reinstalling this half a dozen times and I can’t get it to recognize or detect the SDK. What can I do to get this working?

[wes-novack]

I resolved this issue by running: sudo dnf remove dotnet-sdk-3.1

And then following most of the instructions here: https://stackoverflow.com/a/59201350

sudo rm -rf /usr/share/dotnet
sudo rm -rf /usr/bin/dotnet
sudo rm -rf /etc/yum.repos.d/microsoft-prod.repo
sudo dnf clean all
sudo dnf upgrade
sudo init 6 #reboots the machine

Then sudo dnf install dotnet-sdk-3.1

I did not use the wget or rpm commands suggested in the stackoverflow post, as they aren’t necessary in Fedora 32 because dotnet appears to be included in the OS repos now.

The commentary on that post suggests that the sudo dnf clean all might have been the thing that solves the problem.

[RedCloudSolutions]

The issue is likely due to the differences in the Fedora repos vs. the Microsoft repos. Microsoft’s repo installs the runtime into /usr/share/dotnet, which is where the CLI will look if it comes from a Microsoft-installed package. Fedora installs dotnet-* to /usr/lib64/dotnet and looks for the installed SDKs and runtimes there instead.

Try this to fix your issue (worked for me with Fedora 34):

1. Remove anything your have installed for .NET: $ sudo dnf remove dotnet-*
2. Re-install by disabling the Fedora repos and enabling Microsoft’s: $ sudo dnf install --enablerepo=packages-microsoft-com-prod --disablerepo=updates --disablerepo=fedora dotnet-sdk-5.0

After I did this, the SDK was found: $ dotnet --info .NET SDK (reflecting any global.json): Version: 5.0.302 Commit: c005824e35

Runtime Environment: OS Name: fedora OS Version: 33 OS Platform: Linux RID: fedora.33-x64 Base Path: /usr/share/dotnet/sdk/5.0.302/

Host (useful for support): Version: 5.0.8 Commit: 35964c9215

.NET SDKs installed: 5.0.302 [/usr/share/dotnet/sdk]

.NET runtimes installed: Microsoft.AspNetCore.App 5.0.8 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 5.0.8 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

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