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ASP.NET Core developer certificate: ERR_SSL_VERSION_OR_CIPHER_MISMATCH on macOS

 1 year ago
source link: https://alexanderzeitler.com/articles/asp-net-core-developer-certificate-err-ssl-version-or-cipher-mismatch-on-macos/
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ASP.NET Core developer certificate: ERR_SSL_VERSION_OR_CIPHER_MISMATCH on macOS

Published on Wednesday, March 8, 2023

Photo by Kenny Eliason on Unsplash

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I've been facing an issue with the ASP.NET developer certificates for ASP.NET Core 7 apps using HTTPS on macOS:

ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Whatever I tried (dotnet dev-certs https [ --clean / --trust ]), I couldn't get it to work.

I also removed the certs manually from macOS Keychain.

Then I found this issue on GitHub which suggested adding this PropertyGroup to the csproj file:

<PropertyGroup>
  <UseAppHost>false</UseAppHost>
</PropertyGroup>

In fact it fixed the error.

Now I could use some help from you: Why does this setting fix it?


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