All .Net Core projects showing yellow exclamation mark / triangle

Question

I have a related issue to this question NuGet package shows yellow exclamation mark. However, none of the comments help me.

I have installed .Net Core SDK (shown in the console screenshot)

When I create a new .Net core project; doesn't matter if it's a web site, web api or console application - I get the same result.

The steps I take are as follows:

I get the following - every single reference has the yellow exclamation.

I am running the most recent version of Visual Studio (at this time) 15.4.1

If i use the command line to create the project then everything is fine. However, if i open a cloned project created by another developer I get the yellow exclamation mark.

Any idea what I have incorrectly set up?

Answer 1

try "dotnet restore" command

This will restore all the packages.

make sure you have updated version of Runtime, SDK, and tools from the below link because updates should fix this issue.

https://www.microsoft.com/net/download/core