How to force Visual Studio to re-create the SSL certificate for a .NET Core Web Application running Kestrel?

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When a web project is created, Visual Studio automatically generates a SSL certificate and prompts you to install it. Everything works fine.

That certificate has now expired and I cannot figure out how to get it to re-generate one and start the process over again. I've tried deleting all existing localhost certificates from the certificate store and deleting secrets.json, but nothing seems to force it to re-start the generation process.

asp.net-core .net-core visual-studio ssl-certificate asp.net
1 Answers

I finally figured it out.

For anyone else who runs into this, the steps to fix it are:

  • All localhost certificates must be deleted in certificate manager. They can be found in Personal and Trusted Root
  • The secrets.json file must be deleted. This can be found in \Users\[user]\AppData\Roaming\Microsoft\UserSecrets\
  • In powershell, re-run dotnet dev-certs https --trust to create and install a new one with the prompt to trust

It will work after this again.

user_6594150
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