Can not play video from the archive of the channel, the browser Firefox free
Hello!
Windows XP SP3
Mozilla Firefox 50.0
Flash Player 23.0.0.207
Online verification (https://helpx.adobe.com/ru/flash-player/kb/installation-problems-flash-player-windows.html) has shown that the program is installed on my computer and running. Flash Player is activated for the Firefox browser. But, nevertheless, the video content is not always reproduced, this raises the following message: "Unfortunately, it is impossible to play a video in your browser Try to install a Flash-player."
The computer meets the requirements.
Suggestions for troubleshooting performed (https://helpx.adobe.com/ru/flash-player/kb/flash-player-games-video-or.html), except for the 6 - clean cache (displays a message "Windows could not find "C: \ Documents"), but the disc is present the directory C:. \ Documents and Settings, and cache files have been deleted manually from there.
Despite this, the video still does not play
Page that demonstrates the problem:
