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Can't connet anymore


after windows 10 update (probably) i can't connect to any computer anymore.

teamviewer (v. 9) says that is ready for secure connection, but when i try to connect they give me that it's impossibile to connect. This is a sample of the log:

[removed by a Moderator due to the Community Guidelines]

this happens with alla the connections. I tried to do LAN connection to myself and it works, but not over internet with other computer.

Can u help me please?

Thank you







  • Natascha
    Natascha Posts: 1,296 Senior Moderator

    Hi Alessandro, 

    Thank you for your post. 

    Unfortunately, TeamViewer 9 is not compatible with Windows 10. This might be a reason why the connection does not work. 

    For a detailed overview which operating systems we support, please click here

    Hope this could help. Wish you a great day. 

    All the best,


    German Community Moderator
  • Thank you. 

    But i tried with TW15 (just start with free version) after uninstall the 9 version and TW give me the same error.

    And again: everything was fine until last friday. TW9 "worked like a charm" on Windows 10.

    Thank you again


  • Natascha
    Natascha Posts: 1,296 Senior Moderator

    Hi @webandcad 

    Thanks for your reply. 

    Nice that you tried it with TeamViewer 15 as well. 

    Can you please check the following three things?

    • Have you changed anything in the settings under Extras --> Options --> Network settings --> Incoming LAN connections (set deactivated here)?
    • Are the ports open that are dedicated for TeamViewer?
    • Please try if it works when you uninstall TeamViewer completely - also with the reg.-entries of your device. You will find all relevant information how to do this here

    Let me know, if anything of the three points could help you. 

    Wish you a great day. 
    All the best,

    German Community Moderator
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