ODK Collect Error: No peer certificate after server security change to SSLProtocol +TLSv1.2 +TLSv1.1 (instead of Tls1)

Welcome to the ODK forum, @franksantegoets! When you get a chance, please introduce yourself here. I'd also encourage you to add a real picture as your avatar because it helps build community.

"No peer certificate" is generally a problem with the server certificate. Here's what I would try.

  • Try https://www.ssllabs.com/ssltest and https://www.sslshopper.com/ssl-checker.html to make sure the chain of certs is working.
  • Using the phone's browser, navigate to the server website and see if that works.
  • If you are using a very old Android version, it might be good to upgrade to a more recent version with better support for certs. If you can't upgrade, try to find a more recent device and see if that works better.