dotnet sdk is installed but not recognized - Linux Ubuntu/popOS 22.04

user_14759110 0
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I had the dotnet sdk working just fine yesterday, today when I login to my PC, I update the system and VSCode and then when I tried running dotnet watch run, I got this error:

  * You intended to execute a .NET application:
      The application 'watch' does not exist.
  * You intended to execute a .NET SDK command:
      No .NET SDKs were found.

Download a .NET SDK:
https://aka.ms/dotnet-download

Learn about SDK resolution:
https://aka.ms/dotnet/sdk-not-found

Here is what happens when I try to do an apt install of the sdk(It shows already installed):

sudo apt install dotnet-sdk-6.0
[sudo] password for robinson: 
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
dotnet-sdk-6.0 is already the newest version (6.0.400-1).
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.

Here is my dotnet --info:

global.json file:
  Not found

Host:
  Version:      6.0.8
  Architecture: x64
  Commit:       55fb7ef977

.NET SDKs installed:
  No SDKs were found.

.NET runtimes installed:
  Microsoft.AspNetCore.App 6.0.8 [/usr/lib/dotnet/dotnet6-6.0.108/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 6.0.8 [/usr/lib/dotnet/dotnet6-6.0.108/shared/Microsoft.NETCore.App]

From my googling, it seems it may be PATH issue, but I tried adding a few different paths and it still didn't work. here is the which dotnet:

/usr/bin/dotnet

And my echo path:

/home/robinson/.nvm/versions/node/v18.7.0/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/home/robinson/.dotnet/tools

I'm a linux noob, any help is appreciated. I'm running popOS on an x64 computer.

asp.net-core ubuntu .net
7 Answers

I had the same problem, and here's what I did to resolve it.

  1. Removed all .NET packages
    sudo apt remove 'dotnet*'
    sudo apt remove 'aspnetcore*'

  2. Deleted PMC repository from APT, by deleting the repo .list file
    sudo rm /etc/apt/sources.list.d/microsoft-prod.list

  3. Ran sudo apt update

  4. Installed .NET 6 SDK via sudo apt install dotnet-sdk-6.0

This is one of the solutions provided on the Github issues page for dotnet/core, please follow the original article if the above did not work for you. https://github.com/dotnet/core/issues/7699

user_149699910

So I ended up solving the issue as well by doing the following: I uninstalled everything I could that was dotnet related with: sudo apt remove 'dotnet*' Then I did a sudo apt autoremove and sudo apt update.

Then I followed the instructions on this link to unpack the binaries straight into the /opt/ folder. Once I added the necessary lines to PATH (according to the instructions in the link), everything worked as expected.

I would however recommend following the instructions by Saranga first as using the package manager might be the better solution. Thank you everyone.

user_147591100

There is some package version issue, use this to get dotnet-sdk working again

$ sudo apt install aspnetcore-runtime-6.0=6.0.8-1 dotnet-apphost-pack-6.0=6.0.8-1 dotnet-host=6.0.8-1 dotnet-hostfxr-6.0=6.0.8-1 dotnet-runtime-6.0=6.0.8-1 dotnet-sdk-6.0=6.0.400-1 dotnet-targeting-pack-6.0=6.0.8-1

I guess that will be fixed soon.

user_12581110

in my case it was already installed, but it did not recognize it because it was in another location apparently.

https://docs.microsoft.com/es-es/dotnet/core/install/linux-snap

According to the documentation, I installed it through snap and this was the solution with this command

sudo ln -s /snap/dotnet-sdk/current/dotnet /usr/local/bin/dotnet

in UBUNTU 22.04, .NET6.0

user_97620560

Seems to be an issue with the latest version, i just removed dotnet entirely and reinstalled dotnet sdk 6.0 and everything is working again. Be sure to use sudo apt install dotnet-sdk-6.0 to specify the 6.0 version and not the latest

user_145591990

Here's what I did to fix it:

Removed all .NET packages

sudo apt remove 'dotnet*'

sudo apt remove 'aspnetcore*'

Deleted PMC repository from APT, by deleting the repo .list file

sudo rm /etc/apt/sources.list.d/microsoft-prod.list

Ran

sudo apt update

Installed .NET 6 SDK via the install script:

(follow the instructions carefully!)

https://docs.microsoft.com/en-us/dotnet/core/install/linux-scripted-manual#scripted-install

Modified my ~/.bashrc so at the end of the file it has:

export PATH="$PATH:/home/INSERT_YOUR_USERNAME_HERE/.dotnet"

Now everything is working again.

user_194751520

Check list of dotnet versions installed on your machine and check for other than the SDK, if any other dotnet sdk/runtime is installed on your machine.

dotnet --list-sdks

If there is multiple dotnet versions installed, theres a chance your default dotnet version is pointing to other versions, So change it

dotnet new globaljson --sdk-version 6.0.400-1 --force

Also you use the dotnet-core-uninstall tool to remove the not-required version of dotnet to get rid of the version issue. Note that you have to install it manually as it not part of the sdk/runtime.

dotnet -core-uninstall --all-previews-but-latest --sdk
user_192959480
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