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

Bạn đang xem: Connection could not be established

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

`Connection could not be established.

Reason Unknown error`

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


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

"The teamviewer daetháng 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 khổng lồ several reasons,

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

To fix this problem, you can

Update Teamviewer to the lachạy thử version on both the ends.Restart the Teamviewer on both the ends (maybe restart the service as well).Try disabling your antivi khuẩn software.Check the mạng internet connection tốc độ & solve if there is any problems in the connectivity.

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