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Unacceptable TLS certificate- When trying to install the MonoDevelop Flat Pak

After installing FlatPak and following the instructions to install MonoDevelop here

The Command I run is: sudo flatpak install --user --from https://download.mono-project.com/repo/monodevelop.flatpakref

But the error I receive is:

Can't load uri https://download.mono-project.com/repo/monodevelop.flatpakref: Unacceptable TLS certificate

Is this a problem with thier site that they need to fix? or is there something I can do on my machine.

My OS is Peppermint 7 based on Ubuntu 16.04

Solution

  • The certificate is for *.vo.msecnd.net

    The domain the certificate is delivered on is

    download.mono-project.com

    They bound the wrong certificate to the wrong domain.

    You can't fix this, only send a bug report/issue ticket to their website maintainers.