When I run PM> Remove-Migration -context BloggingContext in VS2015 with an ASP.NET Core project using EF Core I get the following error:
Syst
In general if you are using the Package Manager Console the right way to remove a specific Migration is by referencing the name of the migration
Update-Database -Migration {Name of Migration} -Context {context}
Another way to remove the last migration you have applied according to the docs is by using the command:
dotnet ef migrations remove
This command should be executed from the developer command prompt (how to open command prompt) inside your solution directory.
For example if your application is inside name "Application" and is in the folder c:\Projects. Then your path should be:
C:\Projects\Application