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Thunderbird message - the certificate 127.0.0.1 does not come from trusted source

  • 1 èsì
  • 0 ní àwọn ìṣòro yìí
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  • Èsì tí ó kẹ́hìn lọ́wọ́ Balázs Meskó

mfgraeme
mfgraeme
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Trying to use Thunderbird after break of some years and want to use Proton Mail. Every time I try to set it up I get message 'the certificate 127.0.0.1does not come from trusted source'. Previous experience of Thunderbird was that there were frequent issues like this arising.

Trying to use Thunderbird after break of some years and want to use Proton Mail. Every time I try to set it up I get message 'the certificate 127.0.0.1does not come from trusted source'. Previous experience of Thunderbird was that there were frequent issues like this arising.

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Balázs Meskó
Balázs Meskó
  • Moderator
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Hi,

If you are using Proton Bridge, you are running a web server with a self-signed certificate on your own machine (i.e. localhost/127.0.0.1). In this case, you have to import this certificate into Thunderbird's own trust store.

Luckily Proton has its own guide for this: https://proton.me/support/protonmail-bridge-clients-windows-thunderbird/

Regards, Balázs

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