Highlighted
Posted by
Digon

"Connection not established, Authentication canceled"

Have teamviewer host installed on a server and since yesterday that's the message I'm getting, the server is of course online as I can access the network resources located on it, it's just teamviewer that stopped working.

What could possible cause that? It's a pain to have to plug a monitor to the server every time this happens just to restart the teamviewer windows service to get it back working again.

Log Preview ([link removed by moderator]):

2018/04/19 15:15:25.727  4388  4604 S0!! TerminalServer: No SessionInfo for 2 (SendStatusInfo)
2018/04/19 15:15:41.979  4388  4604 S0   SERVICE_CONTROL_STOP
2018/04/19 15:15:41.979  4388  3176 S0   CAcceptServer[:::5938]::HandleAccept(): Accept canceled
2018/04/19 15:15:41.979  4388  1584 S0   CAcceptServer[0.0.0.0:5938]::HandleAccept(): Accept canceled
2018/04/19 15:15:41.979  4388 14328 S0   TeamViewer is going offline!
2018/04/19 15:15:41.979  9600  9376 G1   Received Control_TerminateProcess
2018/04/19 15:15:41.979  4388 14328 S0   RemoteSessionManager::ClearAllRemoteSessions(): RemoteSession 

 

8 Replies
Highlighted
Posted by
Henagon

Re: "Connection not established, Authentication canceled"

Following this issue as we have it a lot as well.
Would really like to see this solved as the purpose of teamviewer is to take over when needed. Now we need to ask our customers to restart the hosts which is not intended purpose
Highlighted
Posted by
Henagon

Re: "Connection not established, Authentication canceled"

same here, we recently switched from lmi to tv for our remote support needs and on top of the cost or rollout though a bunch of clients now we keep on getting bugs like this all over the place. talk about buyers remorse...
Highlighted
Posted by
Digon

Re: "Connection not established, Authentication canceled"

The teamviewer support has shared with me a possible solution with me, I'm currently trying it out and we'll see it if will prevent further "authentication cancelled" issues that require restarting teamviewer.

We believe the application may be having issues resolving DNS.

Could you please add the following registry key to your system.

key - DWORD 32
name - AllowExternalHooks
value - decimal 1
location- HKLM\Software\Wow6432node\TeamViewer if 64bit machine
HKLM\Software\TeamViewer if 32bit machine

Once the key is added please restart the TeamViewer service.

If you are feeling too lazy to edit the registry I have created a .reg that will insert it for you, feel free to right click and check the contents:

32-bit Registry Patch 

64-bit Registry Patch

5 Replies
Highlighted
Posted by
Henagon

Re: "Connection not established, Authentication canceled"

thanks for this update, testing this now
Highlighted
Posted by
Henagon

Re: "Connection not established, Authentication canceled"

While I didn't try the regedit, your post led me to view DNS settings on a machine I was having this issue with. After making minor changes to DNS, The "Authentication Canceled" appears to have immediately stopped without having to restart the TV service. I hope the code worked for you and others

Highlighted
Posted by
Electron

Re: "Connection not established, Authentication canceled"

I have the same issue on my Mac version, is there a fix for that too?

Highlighted
Posted by
Henagon

Re: "Connection not established, Authentication canceled"

Remove IPV6 protocolo in Windows

Highlighted
Posted by
Photon

Re: "Connection not established, Authentication canceled"

Thank you for the patch.  I away in France and needed to re-start Outlook on a remote computer.  Your fix worked immediately.  Thanks.