I am having this issue with new Ubuntu installation on one of my friends. I am trying to lớn access his laptop và I cannot access from my máy vi tính. Previously it was working perfectly and I can connect lớn other friends but not with this one. He is running Ubuntu 16.04 LTS và installed Teamviewer using .deb package.

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When I enter his user ID, it simply throws a pop up with:

`Connection could not be established.

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Reason Unknown error`

I searched on the website, but it didn"t have proper answer. Can any one help me with this on Ubuntu?


I leave sầu mine stopped so when I log in, I see no daetháng running. i.e. ps -ef|grep -i teamviewer shows no teamviewer processes. systemctl gksu start teamviewerd is a Desktop Inhỏ khổng lồ start it. If I try khổng lồ run Teamviewer from the gui before starting the daemon, I get a popup that says

"The teamviewer daemon is not running. Please start the daemon (needs root permission) ..."


I had the same problem. After searching on the net, I found a hint that it is a time problem at startup. I edited the file /etc/systemd/system/teamviewerd.service by adding a sleep in the ExecStart line:

ExecStart = /bin/bash -c "sleep 60; /opt/teamviewer/tv_bin/teamviewerd -d"


According to lớn this thread,

This can happen due lớn several reasons,

You & your partner running different versions of Teamviewer.You or your partner didn’t restart the Teamviewer after several connections.Some programs conflicting the applications internet access (likely to be Antivirus).Your mạng internet connection is not reliable enough lớn establish the connection

To fix this problem, you can

Update Teamviewer to lớn the lathử nghiệm version on both the ends.Restart the Teamviewer on both the ends (maybe restart the service as well).Try disabling your antivirus software.Chechồng the internet connection speed & solve sầu if there is any problems in the connectivity.

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