A friend has a Avtech DVR and 4 cameras and we can access them remotely through Internet Explorer. When we login we can see the live feed from the 4 cameras without any problems. The problem comes when we want to playback the recorded feeds. On some computers the playback does not work. We get a brief flash of white and the playback screen stays black. It only happens on some computers. The ActiveX control has been allowed and shows as being enabled. We have tried to remotely access from over 6 computers and 2 of them running XP SP3 and IE8 and one running Vista and IE9 exhibit the problem. Most XP machines and my Win7 machine have no problem. If we download a particular recoding then it shows in the viewer and plays, but if we select another time period it will not playback unless dowloaded. It is does not appear to be a firewall issue as none of the test computers have a software firewall. Does anybody have any suggestions on what might be blocking the playback on some computers.
