Videos on Youtube won't play on Firefox

When attempting to watch videos on Youtube, I'm presented only a black screen where the video should be, and no means of "liking" "disliking" or commenting on the video below it. I can navigate Youtube just fine, and it works with other browsers. I've also found that changing the address start to https:// allows me to watch videos, but makes navigation of the site very difficult. Hulu and Netflix work just fine on Firefox, it seems to only be Youtube that isn't working.

Try clearing the Cache in Firefox.
Tools-> Clear Recent History -> [v] Cache
or
Tools->Options->Advanced->Network -> Offline storage -> [Clear Now]
Youtube may have made some changes recently. Clear the Youtube cookie and refresh page if above does not do it.

Similar Messages

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    gabevdd wrote:
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  • Youtube videos/Flash games won't play/freeze browser in Firefox

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    Tried that solution many times. It had no effect. Here is the event log:
    - System
    - Provider
    [ Name] Application Hang
    - EventID 1002
    [ Qualifiers] 0
    Level 2
    Task 101
    Keywords 0x80000000000000
    - TimeCreated
    [ SystemTime] 2015-02-26T05:14:27.000000000Z
    EventRecordID 115925
    Channel Application
    Computer INSPRIATION
    Security
    - EventData
    firefox.exe
    35.0.1.5500
    1b2c
    01d05182065baf97
    4294967295
    C:\Program Files (x86)\Mozilla Firefox\firefox.exe
    55355456-bd76-11e4-bf49-a0481c25d471
    54006F00700020006C006500760065006C002000770069006E0064006F0077002000690073002000690064006C00650000000000
    Binary data:
    In Words
    0000: 006F0054 00200070 0065006C 00650076
    0010: 0020006C 00690077 0064006E 0077006F
    0020: 00690020 00200073 00640069 0065006C
    0030: 00000000
    In Bytes
    0000: 54 00 6F 00 70 00 20 00 T.o.p. .
    0008: 6C 00 65 00 76 00 65 00 l.e.v.e.
    0010: 6C 00 20 00 77 00 69 00 l. .w.i.
    0018: 6E 00 64 00 6F 00 77 00 n.d.o.w.
    0020: 20 00 69 00 73 00 20 00 .i.s. .
    0028: 69 00 64 00 6C 00 65 00 i.d.l.e.
    0030: 00 00 00 00 ....
    Suggestions?

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    It's for my mum, honest. Firefox 25, java and flash uptodate but the Mail Online videos won't play unless I start Firefox in safemode. A large white rectangle appears but nothing else.

    You can try these steps in case of issues with web pages:
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    *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

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