Russ' Do It Yourself Home Workshop

This problem was caused by Kaspersky Antivirus 2012.  This is NOT Kaspersky Internet Security.

Trying to share my screen in Lync 2010.

Received errors:

Sharing failed to connect due to network issues.

Screen sharing stopped due to server connectivity issues.

Sharing ended due to network issues.

Stopping Kaspersky Antivirus fixed the issue, so how do you configure an exception for Lync?

Open Kaspersky

Click Settings.

Select Detected Threats and Exclusion Rules and then Settings.

Trusted applications tab.  Click Add.

Using either the Applications flyout or Browse, locate communicator.exe and add it.

Select “Do not scan network traffic” and click OK.

Sharing should now work!