Remove the existing .NET packages from your distribution. You want to start over and ensure that you don’t install them from the wrong repository.
sudo apt remove 'dotnet*' 'aspnet*' 'netstandard*'
Configure your package manager to ignore the .NET packages from the distribution’s repository. It’s possible that you’ve installed .NET from both repositories, so you want to choose one or the other.
touch /etc/apt/preferences nano /etc/apt/preferences
Package: dotnet* aspnet* netstandard* Pin: origin "<your-package-source>" Pin-Priority: -10
Make sure to replace <your-package-source> with your distribution’s package source, for example, on Ubuntu you may use archive.ubuntu.com in the US.
Use the apt-cache policy command to find the source:
apt-cache policy '~ndotnet.*' | grep -v microsoft | grep '/ubuntu' | cut -d"/" -f3 | sort -u
# Get Ubuntu version declare repo_version=$(if command -v lsb_release &> /dev/null; then lsb_release -r -s; else grep -oP '(?<=^VERSION_ID=).+' /etc/os-release | tr -d '"'; fi) # Download Microsoft signing key and repository wget https://packages.microsoft.com/config/ubuntu/$repo_version/packages-microsoft-prod.deb -O packages-microsoft-prod.deb # Install Microsoft signing key and repository sudo dpkg -i packages-microsoft-prod.deb # Clean up rm packages-microsoft-prod.deb # Update packages sudo apt update
sudo apt-get update && \ sudo apt-get install -y dotnet-sdk-8.0
References
https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu-2204
https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu
https://learn.microsoft.com/en-us/dotnet/core/install/linux-package-mixup?pivots=os-linux-redhat