Need to Update EF Core Tools

The solution that worked for me is running the following commands in Package Manager Console:

PM> Install-Package Microsoft.EntityFrameworkCore -Version 2.1.11
PM> Install-Package Microsoft.EntityFrameworkCore.Tools -Version 2.1.11

Make sure the version matches the one in the error message in my case I got the following error:

The EF Core tools version '2.1.1-rtm-30846' is older than that of the runtime '2.1.11-servicing-32099'. Update the tools for the latest features and bug fixes.

Check the versions available from the following site: https://www.nuget.org/packages/Microsoft.EntityFrameworkCore/

Use command line, Cmd or PowerShell for specific version:

dotnet tool update --global dotnet-ef --version 3.1.0

or for latest version use (works also for reinstallation):

dotnet tool update --global dotnet-ef

I bounced this issue over to the development team over on github. Turns out this is a known issue in the current tooling or nuget packages that get loaded when you create an EF Core-powered AspNet Core site. It's targeted to be fixed in a future release.

For now, the workaround is simply to ignore the warning.

Another workaround is also offered, involving tweaking the csproj file to define the version of the AspNet Core metapackage explicitly -- it's up to 2.1.3 as I'm writing this -- but I couldn't get that approach to work; I still kept getting the warning message.