I think I should have gotten a bug to an add-on that you could install, because I cannot open my menu cookies more and has infected my computer

I was just trying to find a way to get a video on the internet, so I searched it upward and found a video for a specific add on that was on Mozilla Firefox, so I downloaded it, and soon after I had my browser would let me open my menu cookies more. And I'm afraid it has infected my computer too, because now I can't open my Control Panel Application on my windows computer more. The add-on called "Flash Video Downloader - Youtube HD download [4K] 6.9.3".

It is possible that this extension is not fully compatible with the current version and causes this problem.

Start Firefox in Safe Mode to check if one of the extensions (Firefox/tools > Modules > Extensions) or if hardware acceleration is the cause of the problem.

  • Put yourself in the DEFAULT theme: Firefox/tools > Modules > appearance
  • Do NOT click on the reset button on the startup window Mode safe

Tags: Firefox

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