How to resolve .net core build error NETDSDK1061 and warning MSB3277
问题 I´ve had the problem, that my AspNetCore.App-metapackage referenced a lower Version of EntityFrameworkCore (2.1.2), than a EfCore provider package (NpgSql, referencing 2.1.3). The result was the warning MSB3277 (here is the question). The quickfix for that was the accepted answer. Another answer pointed out, that I´ve worked with a lower Microsoft.AspNetCore.App package (2.1.1 at that time) than the last stable version (2.1.4). Changing the package Version was not possible (see picture below)