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<p>Classroom - Windows Firewall is blocking HorizonMedia</p><p><span id="bodyfont"> <p><font face="Arial" size="3"><strong>Description:</strong></font></p> <p><font face="Arial" size="2">Windows XP Service Pack 2 contains a built-in firewall. If you enabled the firewall, you may be prompted with a dialog box, during the Wizard or in a Room, asking you: </font></p> <p><font face="Arial"><img alt="" src="https://bbcrm.edusupportcenter.com/dmfiles/2600/2848/Support%20Downloads/My%20Images/HorizonMediaBlocking.gif" /></font></p> <p><font color="#ff8000" size="3"><strong></strong></font><font face="Arial"> </font></p> <p><font color="#ff8000" face="Arial" size="3"><strong>Solution:</strong></font></p> <p><font face="Arial" size="2">In order for HorizonMedia to work, you need to click on <strong>Unblock</strong>.</font></p> <p><font size="2"></font><font face="Arial"> </font></p> <p><font face="Arial"><font size="2"><font color="#008000"><strong>Note:  </strong></font><font color="#000000">If the above solution does not resolve the problem, further investigation will need to be performed by the <span id="bodyfont"><span id="bodyfont"><span id="bodyfont">Blackboard Collaborate Technical</span></span></span> Support team.  Technical Support will need to know what <strong>Operating System</strong>, <strong>Internet Browser</strong>, <strong>ISP</strong> and <strong>Personal Firewall</strong> software is being used.  In addition, <strong>HorizonMedia Logs</strong> stored on the user's computer will also be needed.  For instructions to retrieve the HorizonMedia Logs, <a target="_parent" href="http://support.blackboardcollaborate.com/ics/support/default.asp?deptID=8336&task=knowledge&questionID=793">click here</a>.  The logs and computer information should be sent to </font></font></font><span id="bodyfont"><a style="font-family: Arial;" target="_blank" href="http://support.blackboardcollaborate.com">http://support.blackboardcollaborate.com</a></span><font face="Arial"><font size="2"><font color="#000000"> if a support ticket has not yet been created.  If a support ticket has been created, simply reply to the last ticket email received, or sign to the Support Center online to update your ticket.</font></font></font></p> <p><font face="Arial"></font> </p> <p><font face="Arial" size="2">-Technical Support</font></p> <p><font face="Arial" size="2"> </font></p> </span></p><h3>Alternate Questions/Keywords</h3><p></p>