You want to allow users to see all YouTube videos except for a specific one, which you want to block. Following the procedures in KB articles FAQ711 and KB3710, which discuss how to allow a single video, do not work in your scenario.
As an example, you want to DENY the following video:
This example assumes a default ALLOW policy.
To block the YouTube video, use the following local policy (or the equivalent VPM policy):
<proxy> url.substring=kioiUPBgOOM DENY
This policy uses the unique identifier string of the video that follows the v= and blocks that substring from playing, as well as the background YouTube video URLs that are retrieved for the video.
Do not set the following URLs to DENY:
NOTE: This CPL has been tested on Internet Explorer 8 and 9 and Firefox 11.0, and it appears to be working as expected.
Imported Document ID: 000008436
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