missing certificate - Printable Version +- Yealink Forums (http://forum.yealink.com/forum) +-- Forum: IP Phone Series (/forumdisplay.php?fid=4) +--- Forum: T5X Series (/forumdisplay.php?fid=58) +--- Thread: missing certificate (/showthread.php?tid=44815)

missing certificate - Exonix - 01-07-2021 11:15 PM Hello everyone, we use over 20 T56A, but unfortunately only 30% are working well, and 70% devices are getting error: you can't sign in because your device is missing a required certificate. I compared all the settings and found no differences. Even working devices don't have any certificates at all: Firmware Version 58.15.0.122 Hardware Version 72.0.1.0.1.0.17 Company Portal Version 5.0.4927.0 Teams Version 1449/1.0.94.2020111101 Thank you for any suggestions. RE: missing certificate - Exonix - 01-08-2021 08:39 PM we found a reason: https inspection of AD FS server. Once it bypassed - everything works. RE: missing certificate - mle@tgtxinc.com - 01-17-2021 04:12 AM I am having the same issue. Can you tell me how you fixed the issue?