Build Failed at the "Create the initial migration" step

[JFallenArch]

I did exactly the same as this tutorial but I found this in the Error List:
Error NU1201 Project Blogging.Migrations.Startup is not compatible with netstandard2.0 (.NETStandard,Version=v2.0). Project Blogging.Migrations.Startup supports: netcoreaSeverity Code Description Project File Line Suppression State
Error NU1201 Project Blogging.Migrations.Startup is not compatible with netstandard2.0 (.NETStandard,Version=v2.0). Project Blogging.Migrations.Startup supports: netcoreapp2.1 (.NETCoreApp,Version=v2.1) Blogging.Model C:\Users\johnn\source\repos\Blogging\Blogging.Model\Blogging.Model.csproj 1
pp2.1(.NETCoreApp,Version=v2.1) Blogging.Model

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Document Details

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• ID: 439f9dd7-6fff-f3af-15a3-c4f407e2c041
• Version Independent ID: 2779bb58-f0af-c9ee-cf40-50e24371a7fc
• Content: Getting Started on UWP - New Database - EF Core
• Content Source: entity-framework/core/get-started/uwp/getting-started.md
• Product: entity-framework
• GitHub Login: @rowanmiller
• Microsoft Alias: divega

[KurtVerbrugge]

I have the same issue - help would be appriciated

[thebigdavetheory]

I had this problem, but got it to build with a small change to the Add-Migration command in package manager.

Note: I'm Using DotNetCore v2.2, and the EF-Core version matches (v2.2)

There are two ways to do this the one I used is the first...
Method #1:
a.)Go into Package Manager Console in VS.
b.) Set the "Default project" to your model project "Blogging.Model"
c.) Run the following command

Add-Migration InitialCreate -StartupProject Blogging.Migrations.Startup

this works because it will use the default project you selected to find the DbContext, and the Startup Project to run the commands.

Method 2:
Type the command:
Add-Migration -Project Blogging.Model -StartupProject Blogging.Migrations.Startup

this should combine all the concepts from method 1 into a single command line, and it shouldn't matter whats selected as the default project in the Package Manager Console.

[mnuess]

I have the same issue. Altough I ensured my "Default project" is set to "Blogging.Model".

So unfortunately none of your methods worked for me.

[liquidboy]

i can't get this working .. like others i think the referencing is wrong or running into .net standard 2 vs .netcoreapp 3 issues ... Please fix these samples

[akuma06]

@liquidboy Please refer to the solution from this issue #1242

[ajcvickers]

Duplicate of #933