F-Droid TLS certificate is now signed by Let’s Encrypt R12 CA which is
signed by ISRG Root X1 CA.
This Root CA is probably not included in Replicant 6.
Adding it manually to the system should solve the problem. I would also
advise you to add the X2 CA certificate (other apps may use it).
You can download the certificates at:
https://letsencrypt.org/certificates/
And then add them under Settings > Security > Install from SD card
On 09/11/2025 16:45, John via Replicant wrote:
Hi,
It's been quite some time since the F-droid basic app cannot connect to
its servers.
Some message about anchor chain shows up but it hides so quickly that I
can't even see what it says. I suppose it has something to do with
security certificate.
Is there a fix for this?
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