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I can't access many websites as it says to update my browser and I update and it still says the same thing. I also can't view videos

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Firefox also gives me a pop up asking if I want to use a previous home page or the new home page and I keep telling it to use the new home page and the pop up continues. I have repeatedly put the new home page in my Control Panel and on the fire fox browser but it still asks.

Firefox also gives me a pop up asking if I want to use a previous home page or the new home page and I keep telling it to use the new home page and the pop up continues. I have repeatedly put the new home page in my Control Panel and on the fire fox browser but it still asks.

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Slim32 said

Firefox gives me a pop-up asking if I want to use a previous home page

That is an alert. Something is trying to change your home page. What is the web address of the unwanted homepage?

I can't access many websites as it says to update my browser and I update and it still says the same thing.

It looks like your Firefox is current. Did you update from Mozilla.org ?

I also can't view videos

If you have problems with current Shockwave Flash plugin versions then check this:

  • see if there are updates for your graphics drivers

https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration

  • disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)

https://forums.adobe.com/message/4468493#TemporaryWorkaround

  • disable hardware acceleration in the Flash plugin

https://forums.adobe.com/thread/891337 See also:

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Start Firefox in Safe Mode to check if one of the extensions (Firefox menu button/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.

  • Switch to the DEFAULT theme: Firefox menu button/Tools > Add-ons > Appearance
  • Do NOT click the Reset button on the Safe Mode start window