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Certain website's videos will not play, MLB and Jay Leno's garage. Why?

Svetlana replied
AnonymousUser

Not sure when this started to happen - perhaps the last update but now the Baseball website and the Jay Leno's garage website's video will not play. They appear to go to sleep while loading. (The little circle goes round and round but never stops.) Other sites seem to work fine.

This happened

Not sure how often

== Since the last update??

Not sure when this started to happen - perhaps the last update but now the Baseball website and the Jay Leno's garage website's video will not play. They appear to go to sleep while loading. (The little circle goes round and round but never stops.) Other sites seem to work fine. == This happened == Not sure how often == Since the last update??

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Try these steps, taking the next one if a previous one didn't help:

  • clear cookies and cache (usually helps with site specific issues),
  • test it in safe mode (usually helps if a recently installed addon is troublesome;
    • start it in normal mode again then,
    • disable all add-ons in tools - addons,
    • then re-enable them by halves to find the culprit),
  • remove and re-add Firefox to your firewalls trusted lists (helps if you can't access the web after an update).