How to create a self-signed certificate for a domain name for development?

Question

I have subdomain.example.com that I use for development purposes. My web application solution contains a web API etc, that I need to call from external systems,

Answer 1

To Create the new certificate for your specific domain:

Open Powershell ISE as admin, run the command:

New-SelfSignedCertificate -DnsName *.mydomain.com, localhost -CertStoreLocation cert:\LocalMachine\My

To trust the new certificate:

• Open mmc.exe
• Go to Console Root -> Certificates (Local Computer) -> Personal
• Select the certificate you have created, do right click -> All Tasks -> Export and follow the export wizard to create a .pfx file
• Go to Console Root -> Certificates -> Trusted Root Certification Authorities and import the new .pfx file

To bind the certificate to your site:

• Open IIS Manager
• Select your site and choose Edit Site -> Bindings in the right pane
• Add new https binding with the correct hostname and the new certificate