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.NET Core 2.1 Preview 2 Known Issues
This document lists known issues for .NET Core 2.1 Preview 2 which may be encountered during usage.
SDK
There is a regression in DotNetCliToolReference support which results in the SDK failing to launch with the following error:
Unable to generate deps.json, it may have been already generated. You can specify the "-d" option before the tool name for diagnostic output (for example, "dotnet -d ": /usr/local/share/dotnet/sdk/2.1.300-preview2-008530/Sdks/Microsoft.NET.Sdk/targets/GenerateDeps/GenerateDeps.proj
There error does not point to the actual issue which is:
error MSB4018: System.UnauthorizedAccessException: Access to the path '/usr/local/share/dotnet/sdk/2.1.300-preview2-008530/Sdks/Microsoft.NET.Sdk/targets/GenerateDeps/obj/Debug/netcoreapp2.1/GenerateDeps.assets.cache' is denied.
Workaround - Give write permissions to the /usr/share/dotnet/sdk/version
Installing on Linux using the installers installs the latest available dotnet-host package
There is an issue with dotnet-host 2.1.0-preview2-26406-04-1 which introduces a dependency incompatibility. core-setup/issues/2128. This is only a problem when installing a previous version of .NET Core on a clean machine. For example, if you installed dotnet-runtime-2.0.6, the Preview 2 host will be installed but not the rest of Preview 2.
We have temporarily removed the Preview 2 installers from the Linux package feeds until this is fully resolved.
Workaround - If you have gotten into this state, downgrade the dotnet-host pacakge to an older version.
sudo apt install dotnet-host=2.0.6-1