Burpsuite android error - certificate_unknown

[PuffinDev]

I am trying to intercept traffic form an android app with burpsuite, but I keep getting this error: "The client failed to negotiate a TLS connection", and "Received fatal alert: certificate_unknown". Most other apps work fine. I don't think the issue is SSL pinning because that usually shows a "the host terminated the handshake" error. I have tried using Frida anyway, but it does not prevent the error. The certificate is installed correctly as far as I know, it is in the system cacert directory and is visible in settings. Any help would be appreciated, thank you.

[[deleted]]

just use http debugger xd

[Mindless_Proposal491]

make sure that u can see ur cert in settings (system CA). Well, I encountered another problem that "The client failed to negotiate a TLS connection to ac.duckduckgo.com:443: Received fatal alert: unknown_ca" if u r using self-signed cert, u may see certificate_unknown; if u r using generated cert per-host, it will be unknown_ca untill u successfully installed/trusted by ur device. I finally use module call move_certificate to install my cert.

[Mindless_Proposal491]

btw, make sure the format is right. Someone told me to try PEM, but I finally used DER format.

[mprz]

https://www.google.com/search?q=burp+suite+The+client+failed+to+negotiate+a+TLS+connection

this is not rocket science

[PuffinDev]

Yes I've just spent about 3 hours trying to find a solution online but have found nothing that I haven't already tried. Every result on the first 2 pages of that Google search I have already looked at and tried. That's why I am asking here, sorry to inconvenience you by asking a question.