Repository is no longer regarded as secure. No Update possible (Fehl:31



  • Esther
    Esther Posts: 4,052 Former Community Manager

    Hi all,

    Thanks a lot for your reports!

    I got the feedback that the issue has been resolved this morning.

    Can you try again and provide us feedback here?

    Thanks and best,


    Former Community Manager

  • gb9130
    gb9130 Posts: 3 ✭✭

    Teamviewer must have fixed the problem overnight. 3 (of 30) systems have successfully updated TeamV this morning. GB.

  • robv
    robv Posts: 2 ✭✭
    edited June 2021

    Yeah, it works for me now, it was more like around late morning today CEST timezone rather than overnight, I had the issue earlier this morning.

    Please don't break it again, I need to install TeamViewer on a new machine on the weekend, and I wouldn't be able to if this broke again. :-)

    Thanks and best regards,


  • myviolinsings
    myviolinsings Posts: 3 ✭✭

    Yes, it updated today via terminal.

  • l0f4r0
    l0f4r0 Posts: 8 ✭✭

    Resolved for me now. Thank you Teamviewer.

  • Tedox
    Tedox Posts: 1


    I get the same error with sudo apt update ( 403 Forbidden [IP: 2600:9000:2574:fc00:1c:3aaa:b100:93a1 443] )

    even after a reinstall of Teamviewer. Currently I have TeamViewer 15.37.3 (DEB). I had also tried to uninstall TeamViewer and then perform the updates, which unfortunately also led to nothing. I have already read through the comments under the post unfortunately I have also found no working solution.

    Thank you in advance that they take care of my problem.