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TeamViewer error: "connection could not be established reason unknown"

New computer (Dell Inspiron 1764 core 3i) new OS (W7) old application (TeamViewer5). No problem establishing connection to same machine (Dell Inspiron 6000 w/XP) with Dell Inspiron Mini 10 w/XP.  Tried messing with firewall (McAfee) on W7 sys to no avail.  Will now re-install TeamViewer.
Answer
Answer

Hi Bill,

 

 

Did you try the suggestion given by ‘FIFA_2010’ for your last post?

http://social.answers.microsoft.com/Forums/en-US/w7programs/thread/8837596f-fbf5-4169-b549-8208a453171d

 

Try disabling the security softwaretemporarily and check if that helps.

For more information refer to:

Disable antivirus software

http://windows.microsoft.com/en-US/windows7/Disable-antivirus-software

 

Note: Antivirus software can help protect your computer against viruses and other security threats. In most cases, you should not disable your antivirus software. If you do have to temporarily disable it to install other software, you should re-enable it as soon as you're done. If you are connected to the Internet or a network during the time your antivirus software is disabled, your computer is vulnerable to attacks.

 

 

Hope this information is helpful.

Amrita M

Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.

 

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Last updated February 2, 2023 Views 70,419 Applies to: