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Android 7.0: Certificate could not be added

See original GitHub issue


  • App version: 1.53.0-rC3-Edition
  • Android version: 7.0 (Nougat)
  • Branch: master
  • Device: Samsung SM-T815 (Samsung Galaxy Tab S2)

How to reproduce

  1. Open the EventFahrplan app
  2. Click Refresh/Get schedule button in the upper right corner
  3. The error dialog appears

Observed behavior

  • Error message “Certificate could not be added” (Failed to establish secure connection (SSL handshake terminated: ssl=0x82dab640: Failure in SSL library, usually a protocol error)
  • Screenshot added at the bottom of this entry

Expected behavior

  • Downloading/Refreshing the schedule

Related issues


Issue Analytics

  • State:closed
  • Created 2 years ago
  • Comments:18 (18 by maintainers)

github_iconTop GitHub Comments

rotsqcommented, Dec 24, 2021

@johnjohndoe It works - if someone will have the same problem and there won’t be an official workaround until the event starts (i.e. hosted by CCC) or a solution for the problem, I will share the link in this issue. In the end, it is based on SSL using EC 256 and works well.

rotsqcommented, Dec 26, 2021

Here we go with the alternative link for the schedule that works for Android 7.0:

The original schedule is fetched every 15 minutes.

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