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An ASP.NET Core 3.1 IdentityServer4 Identity Bootstrap 4 template with localization

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An ASP.NET Core IdentityServer4 Identity Template with Bootstrap 4 and Localization

Build status NuGet Status Change log


  • ASP.NET Core 3.1
  • Latest ASP.NET Core Identity
  • Bootstrap 4 UI
  • Localization en-US, de-DE, it-IT, fr-FR, zh-Hans, es-MX, de-CH, ga-IE, gsw-CH
  • 2FA
  • TOTP
  • Personal data, download, delete (part of Identity)
  • Azure AD, Cert, key vault deployments API
  • SendGrid Email API
  • npm with bundleconfig used for frontend packages
  • EF Core
  • Support for ui_locales using OIDC logins

some print screens:






Using the template


From NuGet:

dotnet new -i IdentityServer4AspNetCoreIdentityTemplate

Locally built nupkg:

dotnet new -i IdentityServer4AspNetCoreIdentityTemplate.5.0.4.nupkg

Local folder:

dotnet new -i 


 is the path to the folder containing .template.config.


dotnet new sts -n YourCompany.Sts

Use the

parameter to change the name of the output created. This string is also used to substitute the namespace name in the .cs file for the project.

Setup, Using the application for your System

  • Change the EF Core code from SQLite to your required database
  • Change the ApplicationUser class as required, remove/add the properties
  • Add the migrations and create the database
  • Define the deployment URLs, create the certs, and use these in your application (Startup, config files)
  • Add the external providers for login as required, or remove
  • Remove the UI views which are not required
  • Add remove the resource file localizations and also in the Startup.
  • Add the client configuration to the Config.cs class (dev, test, staging, prod, or whatever)
  • Update the claims in the IdentityWithAdditionalClaimsProfileService
  • Add the security headers as required, CSP, IFrame, XSS, HSTS, ...
  • If you deploy in a multi instance environment, add the session data to a database using the IdentityServer4.EntityFramework NuGet package


dotnet new -u IdentityServer4AspNetCoreIdentityTemplate



nuget pack content/IdentityServer4AspNetCoreIdentityTemplate.nuspec

dotnet Migrations

open the cmd in project folder:

dotnet restore

dotnet ef migrations add sts_init --context ApplicationDbContext --verbose

dotnet ef database update --verbose

Using Powershell to create the self signed certs:

New-SelfSignedCertificate -DnsName "", "" -CertStoreLocation "cert:\LocalMachine\My"

$mypwd = ConvertTo-SecureString -String "1234" -Force -AsPlainText

Get-ChildItem -Path cert:\localMachine\my"The thumbprint..." | Export-PfxCertificate -FilePath C:\git\sts_dev_cert.pfx -Password $mypwd

Credits, Used NuGet packages + ASP.NET Core 3.1 standard packages

  • IdentityServer4
  • IdentityServer4.AspNetIdentity
  • Microsoft.Azure.KeyVault
  • Microsoft.IdentityModel.Clients.ActiveDirectory
  • Sendgrid
  • NWebsec.AspNetCore.Middleware
  • Serilog


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